Home / 147,378.97-221,046.92-72,479.01

Finding the Fourth Proportional to 147,378.97, 221,046.92 and 72,479.01

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Solution

The fourth proportional to 147,378.97, 221,046.92 and 72,479.01 is: 108,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,378.97 : 221,046.92 = 72,479.01 : x
  2. Step 2: Convert to fraction form
    147,378.97/221,046.92 = 72,479.01/x
  3. Step 3: Cross multiply
    147,378.97x = 221,046.92 × 72,479.01
  4. Step 4: Simplify right side
    147,378.97x = 16,021,261,925.15
  5. Step 5: Solve for x
    x = 16,021,261,925.15/147,378.97
  6. Step 6: Final answer
    x = 108,707.92

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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.