Home / 157,342.40-217,132.08-85,723.04

Finding the Fourth Proportional to 157,342.40, 217,132.08 and 85,723.04

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Solution

The fourth proportional to 157,342.40, 217,132.08 and 85,723.04 is: 118,297.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,342.40 : 217,132.08 = 85,723.04 : x
  2. Step 2: Convert to fraction form
    157,342.40/217,132.08 = 85,723.04/x
  3. Step 3: Cross multiply
    157,342.40x = 217,132.08 × 85,723.04
  4. Step 4: Simplify right side
    157,342.40x = 18,613,221,979.12
  5. Step 5: Solve for x
    x = 18,613,221,979.12/157,342.40
  6. Step 6: Final answer
    x = 118,297.56

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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.