Home / 157,743.12-217,686-101,154.72

Finding the Fourth Proportional to 157,743.12, 217,686 and 101,154.72

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Solution

The fourth proportional to 157,743.12, 217,686 and 101,154.72 is: 139,593.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,743.12 : 217,686 = 101,154.72 : x
  2. Step 2: Convert to fraction form
    157,743.12/217,686 = 101,154.72/x
  3. Step 3: Cross multiply
    157,743.12x = 217,686 × 101,154.72
  4. Step 4: Simplify right side
    157,743.12x = 22,019,966,377.92
  5. Step 5: Solve for x
    x = 22,019,966,377.92/157,743.12
  6. Step 6: Final answer
    x = 139,593.83

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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.