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Finding the Fourth Proportional to 99,760.80, 149,648.40 and 60,232.80

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Solution

The fourth proportional to 99,760.80, 149,648.40 and 60,232.80 is: 90,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,760.80 : 149,648.40 = 60,232.80 : x
  2. Step 2: Convert to fraction form
    99,760.80/149,648.40 = 60,232.80/x
  3. Step 3: Cross multiply
    99,760.80x = 149,648.40 × 60,232.80
  4. Step 4: Simplify right side
    99,760.80x = 9,013,742,147.52
  5. Step 5: Solve for x
    x = 9,013,742,147.52/99,760.80
  6. Step 6: Final answer
    x = 90,353.55

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1.5x scale

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.