Home / 148,757.76-205,287.04-81,690.24

Finding the Fourth Proportional to 148,757.76, 205,287.04 and 81,690.24

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Solution

The fourth proportional to 148,757.76, 205,287.04 and 81,690.24 is: 112,733.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,757.76 : 205,287.04 = 81,690.24 : x
  2. Step 2: Convert to fraction form
    148,757.76/205,287.04 = 81,690.24/x
  3. Step 3: Cross multiply
    148,757.76x = 205,287.04 × 81,690.24
  4. Step 4: Simplify right side
    148,757.76x = 16,769,947,566.49
  5. Step 5: Solve for x
    x = 16,769,947,566.49/148,757.76
  6. Step 6: Final answer
    x = 112,733.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.