Home / 100,045.11-138,057.10-54,714.27

Finding the Fourth Proportional to 100,045.11, 138,057.10 and 54,714.27

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Solution

The fourth proportional to 100,045.11, 138,057.10 and 54,714.27 is: 75,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,045.11 : 138,057.10 = 54,714.27 : x
  2. Step 2: Convert to fraction form
    100,045.11/138,057.10 = 54,714.27/x
  3. Step 3: Cross multiply
    100,045.11x = 138,057.10 × 54,714.27
  4. Step 4: Simplify right side
    100,045.11x = 7,553,693,444.82
  5. Step 5: Solve for x
    x = 7,553,693,444.82/100,045.11
  6. Step 6: Final answer
    x = 75,502.88

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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.