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Finding the Fourth Proportional to 157,555.66, 217,418.95 and 89,563.72

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Solution

The fourth proportional to 157,555.66, 217,418.95 and 89,563.72 is: 123,593.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,555.66 : 217,418.95 = 89,563.72 : x
  2. Step 2: Convert to fraction form
    157,555.66/217,418.95 = 89,563.72/x
  3. Step 3: Cross multiply
    157,555.66x = 217,418.95 × 89,563.72
  4. Step 4: Simplify right side
    157,555.66x = 19,472,849,960.49
  5. Step 5: Solve for x
    x = 19,472,849,960.49/157,555.66
  6. Step 6: Final answer
    x = 123,593.47

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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.