Home / 99,782.18-149,724.30-47,177.54

Finding the Fourth Proportional to 99,782.18, 149,724.30 and 47,177.54

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Solution

The fourth proportional to 99,782.18, 149,724.30 and 47,177.54 is: 70,790.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,782.18 : 149,724.30 = 47,177.54 : x
  2. Step 2: Convert to fraction form
    99,782.18/149,724.30 = 47,177.54/x
  3. Step 3: Cross multiply
    99,782.18x = 149,724.30 × 47,177.54
  4. Step 4: Simplify right side
    99,782.18x = 7,063,623,876.61
  5. Step 5: Solve for x
    x = 7,063,623,876.61/99,782.18
  6. Step 6: Final answer
    x = 70,790.44

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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.