Home / 129,307,760.68-178,448,873.38-73,551,751.72

Finding the Fourth Proportional to 129,307,760.68, 178,448,873.38 and 73,551,751.72

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Solution

The fourth proportional to 129,307,760.68, 178,448,873.38 and 73,551,751.72 is: 101,503,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,307,760.68 : 178,448,873.38 = 73,551,751.72 : x
  2. Step 2: Convert to fraction form
    129,307,760.68/178,448,873.38 = 73,551,751.72/x
  3. Step 3: Cross multiply
    129,307,760.68x = 178,448,873.38 × 73,551,751.72
  4. Step 4: Simplify right side
    129,307,760.68x = 13,125,227,229,559,476
  5. Step 5: Solve for x
    x = 13,125,227,229,559,476/129,307,760.68
  6. Step 6: Final answer
    x = 101,503,785.70

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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.