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Finding the Fourth Proportional to 132,364.80, 198,547.20 and 79,747.20

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Solution

The fourth proportional to 132,364.80, 198,547.20 and 79,747.20 is: 119,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,364.80 : 198,547.20 = 79,747.20 : x
  2. Step 2: Convert to fraction form
    132,364.80/198,547.20 = 79,747.20/x
  3. Step 3: Cross multiply
    132,364.80x = 198,547.20 × 79,747.20
  4. Step 4: Simplify right side
    132,364.80x = 15,833,583,267.84
  5. Step 5: Solve for x
    x = 15,833,583,267.84/132,364.80
  6. Step 6: Final answer
    x = 119,620.80

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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.