Home / 129,582.80-178,763.13-75,834.56

Finding the Fourth Proportional to 129,582.80, 178,763.13 and 75,834.56

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Solution

The fourth proportional to 129,582.80, 178,763.13 and 75,834.56 is: 104,615.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,582.80 : 178,763.13 = 75,834.56 : x
  2. Step 2: Convert to fraction form
    129,582.80/178,763.13 = 75,834.56/x
  3. Step 3: Cross multiply
    129,582.80x = 178,763.13 × 75,834.56
  4. Step 4: Simplify right side
    129,582.80x = 13,556,423,307.77
  5. Step 5: Solve for x
    x = 13,556,423,307.77/129,582.80
  6. Step 6: Final answer
    x = 104,615.92

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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.