Home / 157,335.48-217,121.76-85,715.28

Finding the Fourth Proportional to 157,335.48, 217,121.76 and 85,715.28

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Solution

The fourth proportional to 157,335.48, 217,121.76 and 85,715.28 is: 118,286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,335.48 : 217,121.76 = 85,715.28 : x
  2. Step 2: Convert to fraction form
    157,335.48/217,121.76 = 85,715.28/x
  3. Step 3: Cross multiply
    157,335.48x = 217,121.76 × 85,715.28
  4. Step 4: Simplify right side
    157,335.48x = 18,610,652,452.49
  5. Step 5: Solve for x
    x = 18,610,652,452.49/157,335.48
  6. Step 6: Final answer
    x = 118,286.43

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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.