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Finding the Fourth Proportional to 157,373.10, 217,172.12 and 85,753.70

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Solution

The fourth proportional to 157,373.10, 217,172.12 and 85,753.70 is: 118,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,373.10 : 217,172.12 = 85,753.70 : x
  2. Step 2: Convert to fraction form
    157,373.10/217,172.12 = 85,753.70/x
  3. Step 3: Cross multiply
    157,373.10x = 217,172.12 × 85,753.70
  4. Step 4: Simplify right side
    157,373.10x = 18,623,312,826.84
  5. Step 5: Solve for x
    x = 18,623,312,826.84/157,373.10
  6. Step 6: Final answer
    x = 118,338.60

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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.