Home / 122,008,197.56-168,309,055.28-77,908,829.72

Finding the Fourth Proportional to 122,008,197.56, 168,309,055.28 and 77,908,829.72

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Solution

The fourth proportional to 122,008,197.56, 168,309,055.28 and 77,908,829.72 is: 107,474,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,008,197.56 : 168,309,055.28 = 77,908,829.72 : x
  2. Step 2: Convert to fraction form
    122,008,197.56/168,309,055.28 = 77,908,829.72/x
  3. Step 3: Cross multiply
    122,008,197.56x = 168,309,055.28 × 77,908,829.72
  4. Step 4: Simplify right side
    122,008,197.56x = 13,112,761,528,143,586
  5. Step 5: Solve for x
    x = 13,112,761,528,143,586/122,008,197.56
  6. Step 6: Final answer
    x = 107,474,430.33

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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.