Home / 129,904.04-179,265.80-72,544.29

Finding the Fourth Proportional to 129,904.04, 179,265.80 and 72,544.29

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Solution

The fourth proportional to 129,904.04, 179,265.80 and 72,544.29 is: 100,110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,904.04 : 179,265.80 = 72,544.29 : x
  2. Step 2: Convert to fraction form
    129,904.04/179,265.80 = 72,544.29/x
  3. Step 3: Cross multiply
    129,904.04x = 179,265.80 × 72,544.29
  4. Step 4: Simplify right side
    129,904.04x = 13,004,709,819.56
  5. Step 5: Solve for x
    x = 13,004,709,819.56/129,904.04
  6. Step 6: Final answer
    x = 100,110.13

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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.