Home / 129,931,343,242.19-179,281,545,246.11-74,978,468,681.73

Finding the Fourth Proportional to 129,931,343,242.19, 179,281,545,246.11 and 74,978,468,681.73

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Solution

The fourth proportional to 129,931,343,242.19, 179,281,545,246.11 and 74,978,468,681.73 is: 103,456,605,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,931,343,242.19 : 179,281,545,246.11 = 74,978,468,681.73 : x
  2. Step 2: Convert to fraction form
    129,931,343,242.19/179,281,545,246.11 = 74,978,468,681.73/x
  3. Step 3: Cross multiply
    129,931,343,242.19x = 179,281,545,246.11 × 74,978,468,681.73
  4. Step 4: Simplify right side
    129,931,343,242.19x = 13,442,255,725,447,616,659,456
  5. Step 5: Solve for x
    x = 13,442,255,725,447,616,659,456/129,931,343,242.19
  6. Step 6: Final answer
    x = 103,456,605,542.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.