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Finding the Fourth Proportional to 144,487.79, 216,731.99 and 77,959.25

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Solution

The fourth proportional to 144,487.79, 216,731.99 and 77,959.25 is: 116,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,487.79 : 216,731.99 = 77,959.25 : x
  2. Step 2: Convert to fraction form
    144,487.79/216,731.99 = 77,959.25/x
  3. Step 3: Cross multiply
    144,487.79x = 216,731.99 × 77,959.25
  4. Step 4: Simplify right side
    144,487.79x = 16,896,263,391.41
  5. Step 5: Solve for x
    x = 16,896,263,391.41/144,487.79
  6. Step 6: Final answer
    x = 116,939.04

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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.