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Finding the Fourth Proportional to 157,085.97, 216,780.85 and 85,466.05

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Solution

The fourth proportional to 157,085.97, 216,780.85 and 85,466.05 is: 117,944.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,085.97 : 216,780.85 = 85,466.05 : x
  2. Step 2: Convert to fraction form
    157,085.97/216,780.85 = 85,466.05/x
  3. Step 3: Cross multiply
    157,085.97x = 216,780.85 × 85,466.05
  4. Step 4: Simplify right side
    157,085.97x = 18,527,402,530.02
  5. Step 5: Solve for x
    x = 18,527,402,530.02/157,085.97
  6. Step 6: Final answer
    x = 117,944.35

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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.