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Finding the Fourth Proportional to 120,099.80, 179,631.30 and 101,437.40

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Solution

The fourth proportional to 120,099.80, 179,631.30 and 101,437.40 is: 151,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,099.80 : 179,631.30 = 101,437.40 : x
  2. Step 2: Convert to fraction form
    120,099.80/179,631.30 = 101,437.40/x
  3. Step 3: Cross multiply
    120,099.80x = 179,631.30 × 101,437.40
  4. Step 4: Simplify right side
    120,099.80x = 18,221,332,030.62
  5. Step 5: Solve for x
    x = 18,221,332,030.62/120,099.80
  6. Step 6: Final answer
    x = 151,718.25

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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.