Home / 129,475.24-178,673.08-72,114.38

Finding the Fourth Proportional to 129,475.24, 178,673.08 and 72,114.38

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Solution

The fourth proportional to 129,475.24, 178,673.08 and 72,114.38 is: 99,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,475.24 : 178,673.08 = 72,114.38 : x
  2. Step 2: Convert to fraction form
    129,475.24/178,673.08 = 72,114.38/x
  3. Step 3: Cross multiply
    129,475.24x = 178,673.08 × 72,114.38
  4. Step 4: Simplify right side
    129,475.24x = 12,884,898,026.32
  5. Step 5: Solve for x
    x = 12,884,898,026.32/129,475.24
  6. Step 6: Final answer
    x = 99,516.31

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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.