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Finding the Fourth Proportional to 157,299.26, 217,073.28 and 85,679.06

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Solution

The fourth proportional to 157,299.26, 217,073.28 and 85,679.06 is: 118,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,299.26 : 217,073.28 = 85,679.06 : x
  2. Step 2: Convert to fraction form
    157,299.26/217,073.28 = 85,679.06/x
  3. Step 3: Cross multiply
    157,299.26x = 217,073.28 × 85,679.06
  4. Step 4: Simplify right side
    157,299.26x = 18,598,634,581.52
  5. Step 5: Solve for x
    x = 18,598,634,581.52/157,299.26
  6. Step 6: Final answer
    x = 118,237.27

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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.