Home / 120,929.04-166,721.76-99,337.68

Finding the Fourth Proportional to 120,929.04, 166,721.76 and 99,337.68

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Solution

The fourth proportional to 120,929.04, 166,721.76 and 99,337.68 is: 136,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,929.04 : 166,721.76 = 99,337.68 : x
  2. Step 2: Convert to fraction form
    120,929.04/166,721.76 = 99,337.68/x
  3. Step 3: Cross multiply
    120,929.04x = 166,721.76 × 99,337.68
  4. Step 4: Simplify right side
    120,929.04x = 16,561,752,843.92
  5. Step 5: Solve for x
    x = 16,561,752,843.92/120,929.04
  6. Step 6: Final answer
    x = 136,954.31

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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.