Home / 129,516.15-178,732.13-72,927.93

Finding the Fourth Proportional to 129,516.15, 178,732.13 and 72,927.93

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Solution

The fourth proportional to 129,516.15, 178,732.13 and 72,927.93 is: 100,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,516.15 : 178,732.13 = 72,927.93 : x
  2. Step 2: Convert to fraction form
    129,516.15/178,732.13 = 72,927.93/x
  3. Step 3: Cross multiply
    129,516.15x = 178,732.13 × 72,927.93
  4. Step 4: Simplify right side
    129,516.15x = 13,034,563,900.75
  5. Step 5: Solve for x
    x = 13,034,563,900.75/129,516.15
  6. Step 6: Final answer
    x = 100,640.45

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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.