Home / 157,439.05-217,257.69-89,446.59

Finding the Fourth Proportional to 157,439.05, 217,257.69 and 89,446.59

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Solution

The fourth proportional to 157,439.05, 217,257.69 and 89,446.59 is: 123,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,439.05 : 217,257.69 = 89,446.59 : x
  2. Step 2: Convert to fraction form
    157,439.05/217,257.69 = 89,446.59/x
  3. Step 3: Cross multiply
    157,439.05x = 217,257.69 × 89,446.59
  4. Step 4: Simplify right side
    157,439.05x = 19,432,957,988.26
  5. Step 5: Solve for x
    x = 19,432,957,988.26/157,439.05
  6. Step 6: Final answer
    x = 123,431.63

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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.