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Finding the Fourth Proportional to 162,931,807.80, 244,681,146.90 and 86,404,303.80

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Solution

The fourth proportional to 162,931,807.80, 244,681,146.90 and 86,404,303.80 is: 129,756,764.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,931,807.80 : 244,681,146.90 = 86,404,303.80 : x
  2. Step 2: Convert to fraction form
    162,931,807.80/244,681,146.90 = 86,404,303.80/x
  3. Step 3: Cross multiply
    162,931,807.80x = 244,681,146.90 × 86,404,303.80
  4. Step 4: Simplify right side
    162,931,807.80x = 21,141,504,150,880,028
  5. Step 5: Solve for x
    x = 21,141,504,150,880,028/162,931,807.80
  6. Step 6: Final answer
    x = 129,756,764.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.