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Finding the Fourth Proportional to 157,612.80, 217,264.32 and 112,154.88

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Solution

The fourth proportional to 157,612.80, 217,264.32 and 112,154.88 is: 154,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,612.80 : 217,264.32 = 112,154.88 : x
  2. Step 2: Convert to fraction form
    157,612.80/217,264.32 = 112,154.88/x
  3. Step 3: Cross multiply
    157,612.80x = 217,264.32 × 112,154.88
  4. Step 4: Simplify right side
    157,612.80x = 24,367,253,737.88
  5. Step 5: Solve for x
    x = 24,367,253,737.88/157,612.80
  6. Step 6: Final answer
    x = 154,602.00

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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.