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Finding the Fourth Proportional to 157,577.09, 217,459.31 and 85,959.63

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Solution

The fourth proportional to 157,577.09, 217,459.31 and 85,959.63 is: 118,625.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,577.09 : 217,459.31 = 85,959.63 : x
  2. Step 2: Convert to fraction form
    157,577.09/217,459.31 = 85,959.63/x
  3. Step 3: Cross multiply
    157,577.09x = 217,459.31 × 85,959.63
  4. Step 4: Simplify right side
    157,577.09x = 18,692,721,397.86
  5. Step 5: Solve for x
    x = 18,692,721,397.86/157,577.09
  6. Step 6: Final answer
    x = 118,625.89

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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.