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Finding the Fourth Proportional to 172,062.36, 257,678.24 and 103,476.68

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Solution

The fourth proportional to 172,062.36, 257,678.24 and 103,476.68 is: 154,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,062.36 : 257,678.24 = 103,476.68 : x
  2. Step 2: Convert to fraction form
    172,062.36/257,678.24 = 103,476.68/x
  3. Step 3: Cross multiply
    172,062.36x = 257,678.24 × 103,476.68
  4. Step 4: Simplify right side
    172,062.36x = 26,663,687,753.74
  5. Step 5: Solve for x
    x = 26,663,687,753.74/172,062.36
  6. Step 6: Final answer
    x = 154,965.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.