Home / 130,406.32-179,948.28-103,613.68

Finding the Fourth Proportional to 130,406.32, 179,948.28 and 103,613.68

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Solution

The fourth proportional to 130,406.32, 179,948.28 and 103,613.68 is: 142,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,406.32 : 179,948.28 = 103,613.68 : x
  2. Step 2: Convert to fraction form
    130,406.32/179,948.28 = 103,613.68/x
  3. Step 3: Cross multiply
    130,406.32x = 179,948.28 × 103,613.68
  4. Step 4: Simplify right side
    130,406.32x = 18,645,103,500.47
  5. Step 5: Solve for x
    x = 18,645,103,500.47/130,406.32
  6. Step 6: Final answer
    x = 142,976.99

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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.