Home / 157,320.20-217,100.81-85,700.27

Finding the Fourth Proportional to 157,320.20, 217,100.81 and 85,700.27

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Solution

The fourth proportional to 157,320.20, 217,100.81 and 85,700.27 is: 118,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,320.20 : 217,100.81 = 85,700.27 : x
  2. Step 2: Convert to fraction form
    157,320.20/217,100.81 = 85,700.27/x
  3. Step 3: Cross multiply
    157,320.20x = 217,100.81 × 85,700.27
  4. Step 4: Simplify right side
    157,320.20x = 18,605,598,034.22
  5. Step 5: Solve for x
    x = 18,605,598,034.22/157,320.20
  6. Step 6: Final answer
    x = 118,265.79

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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.