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Finding the Fourth Proportional to 94,959.30, 142,354.98 and 81,008.94

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Solution

The fourth proportional to 94,959.30, 142,354.98 and 81,008.94 is: 121,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,959.30 : 142,354.98 = 81,008.94 : x
  2. Step 2: Convert to fraction form
    94,959.30/142,354.98 = 81,008.94/x
  3. Step 3: Cross multiply
    94,959.30x = 142,354.98 × 81,008.94
  4. Step 4: Simplify right side
    94,959.30x = 11,532,026,033.52
  5. Step 5: Solve for x
    x = 11,532,026,033.52/94,959.30
  6. Step 6: Final answer
    x = 121,441.78

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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.