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Finding the Fourth Proportional to 144,179.52, 216,133.20 and 69,342

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Solution

The fourth proportional to 144,179.52, 216,133.20 and 69,342 is: 103,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,179.52 : 216,133.20 = 69,342 : x
  2. Step 2: Convert to fraction form
    144,179.52/216,133.20 = 69,342/x
  3. Step 3: Cross multiply
    144,179.52x = 216,133.20 × 69,342
  4. Step 4: Simplify right side
    144,179.52x = 14,987,108,354.40
  5. Step 5: Solve for x
    x = 14,987,108,354.40/144,179.52
  6. Step 6: Final answer
    x = 103,947.55

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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.