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Finding the Fourth Proportional to 144,559.20, 216,838.80 and 129,833.40

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Solution

The fourth proportional to 144,559.20, 216,838.80 and 129,833.40 is: 194,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,559.20 : 216,838.80 = 129,833.40 : x
  2. Step 2: Convert to fraction form
    144,559.20/216,838.80 = 129,833.40/x
  3. Step 3: Cross multiply
    144,559.20x = 216,838.80 × 129,833.40
  4. Step 4: Simplify right side
    144,559.20x = 28,152,918,655.92
  5. Step 5: Solve for x
    x = 28,152,918,655.92/144,559.20
  6. Step 6: Final answer
    x = 194,750.10

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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.