Home / 104,753.28-157,287.36-90,121.28

Finding the Fourth Proportional to 104,753.28, 157,287.36 and 90,121.28

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Solution

The fourth proportional to 104,753.28, 157,287.36 and 90,121.28 is: 135,317.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,753.28 : 157,287.36 = 90,121.28 : x
  2. Step 2: Convert to fraction form
    104,753.28/157,287.36 = 90,121.28/x
  3. Step 3: Cross multiply
    104,753.28x = 157,287.36 × 90,121.28
  4. Step 4: Simplify right side
    104,753.28x = 14,174,938,211.02
  5. Step 5: Solve for x
    x = 14,174,938,211.02/104,753.28
  6. Step 6: Final answer
    x = 135,317.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.