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Finding the Fourth Proportional to 157,630.91, 217,473.82 and 121,343.45

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Solution

The fourth proportional to 157,630.91, 217,473.82 and 121,343.45 is: 167,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,630.91 : 217,473.82 = 121,343.45 : x
  2. Step 2: Convert to fraction form
    157,630.91/217,473.82 = 121,343.45/x
  3. Step 3: Cross multiply
    157,630.91x = 217,473.82 × 121,343.45
  4. Step 4: Simplify right side
    157,630.91x = 26,389,023,436.04
  5. Step 5: Solve for x
    x = 26,389,023,436.04/157,630.91
  6. Step 6: Final answer
    x = 167,410.21

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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.