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Finding the Fourth Proportional to 96,658.20, 144,987.30 and 76,829.40

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Solution

The fourth proportional to 96,658.20, 144,987.30 and 76,829.40 is: 115,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,658.20 : 144,987.30 = 76,829.40 : x
  2. Step 2: Convert to fraction form
    96,658.20/144,987.30 = 76,829.40/x
  3. Step 3: Cross multiply
    96,658.20x = 144,987.30 × 76,829.40
  4. Step 4: Simplify right side
    96,658.20x = 11,139,287,266.62
  5. Step 5: Solve for x
    x = 11,139,287,266.62/96,658.20
  6. Step 6: Final answer
    x = 115,244.10

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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.