Home / 157,651.72-217,564.18-89,678.54

Finding the Fourth Proportional to 157,651.72, 217,564.18 and 89,678.54

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Solution

The fourth proportional to 157,651.72, 217,564.18 and 89,678.54 is: 123,759.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,651.72 : 217,564.18 = 89,678.54 : x
  2. Step 2: Convert to fraction form
    157,651.72/217,564.18 = 89,678.54/x
  3. Step 3: Cross multiply
    157,651.72x = 217,564.18 × 89,678.54
  4. Step 4: Simplify right side
    157,651.72x = 19,510,838,338.41
  5. Step 5: Solve for x
    x = 19,510,838,338.41/157,651.72
  6. Step 6: Final answer
    x = 123,759.12

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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.