Home / 157,327.12-217,108.92-85,708

Finding the Fourth Proportional to 157,327.12, 217,108.92 and 85,708

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Solution

The fourth proportional to 157,327.12, 217,108.92 and 85,708 is: 118,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,327.12 : 217,108.92 = 85,708 : x
  2. Step 2: Convert to fraction form
    157,327.12/217,108.92 = 85,708/x
  3. Step 3: Cross multiply
    157,327.12x = 217,108.92 × 85,708
  4. Step 4: Simplify right side
    157,327.12x = 18,607,971,315.36
  5. Step 5: Solve for x
    x = 18,607,971,315.36/157,327.12
  6. Step 6: Final answer
    x = 118,275.68

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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.