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Finding the Fourth Proportional to 157,267.78, 217,026.95 and 85,646.26

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Solution

The fourth proportional to 157,267.78, 217,026.95 and 85,646.26 is: 118,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,267.78 : 217,026.95 = 85,646.26 : x
  2. Step 2: Convert to fraction form
    157,267.78/217,026.95 = 85,646.26/x
  3. Step 3: Cross multiply
    157,267.78x = 217,026.95 × 85,646.26
  4. Step 4: Simplify right side
    157,267.78x = 18,587,546,429.76
  5. Step 5: Solve for x
    x = 18,587,546,429.76/157,267.78
  6. Step 6: Final answer
    x = 118,190.43

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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.