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Finding the Fourth Proportional to 157,430.01, 217,251.21 and 85,810.32

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Solution

The fourth proportional to 157,430.01, 217,251.21 and 85,810.32 is: 118,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,430.01 : 217,251.21 = 85,810.32 : x
  2. Step 2: Convert to fraction form
    157,430.01/217,251.21 = 85,810.32/x
  3. Step 3: Cross multiply
    157,430.01x = 217,251.21 × 85,810.32
  4. Step 4: Simplify right side
    157,430.01x = 18,642,396,172.28
  5. Step 5: Solve for x
    x = 18,642,396,172.28/157,430.01
  6. Step 6: Final answer
    x = 118,417.04

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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.