Home / 129,096.59-178,170.02-72,507.97

Finding the Fourth Proportional to 129,096.59, 178,170.02 and 72,507.97

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Solution

The fourth proportional to 129,096.59, 178,170.02 and 72,507.97 is: 100,070.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,096.59 : 178,170.02 = 72,507.97 : x
  2. Step 2: Convert to fraction form
    129,096.59/178,170.02 = 72,507.97/x
  3. Step 3: Cross multiply
    129,096.59x = 178,170.02 × 72,507.97
  4. Step 4: Simplify right side
    129,096.59x = 12,918,746,465.06
  5. Step 5: Solve for x
    x = 12,918,746,465.06/129,096.59
  6. Step 6: Final answer
    x = 100,070.39

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1.5x scale

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.