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Finding the Fourth Proportional to 157,160.72, 216,875.16 and 85,540.88

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Solution

The fourth proportional to 157,160.72, 216,875.16 and 85,540.88 is: 118,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,160.72 : 216,875.16 = 85,540.88 : x
  2. Step 2: Convert to fraction form
    157,160.72/216,875.16 = 85,540.88/x
  3. Step 3: Cross multiply
    157,160.72x = 216,875.16 × 85,540.88
  4. Step 4: Simplify right side
    157,160.72x = 18,551,692,036.54
  5. Step 5: Solve for x
    x = 18,551,692,036.54/157,160.72
  6. Step 6: Final answer
    x = 118,042.80

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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.