Home / 157,581.52-217,431.57-89,586.78

Finding the Fourth Proportional to 157,581.52, 217,431.57 and 89,586.78

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Solution

The fourth proportional to 157,581.52, 217,431.57 and 89,586.78 is: 123,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,581.52 : 217,431.57 = 89,586.78 : x
  2. Step 2: Convert to fraction form
    157,581.52/217,431.57 = 89,586.78/x
  3. Step 3: Cross multiply
    157,581.52x = 217,431.57 × 89,586.78
  4. Step 4: Simplify right side
    157,581.52x = 19,478,993,747.23
  5. Step 5: Solve for x
    x = 19,478,993,747.23/157,581.52
  6. Step 6: Final answer
    x = 123,612.17

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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.