Home / 130,213.14-179,769.42-86,639.91

Finding the Fourth Proportional to 130,213.14, 179,769.42 and 86,639.91

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Solution

The fourth proportional to 130,213.14, 179,769.42 and 86,639.91 is: 119,613.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,213.14 : 179,769.42 = 86,639.91 : x
  2. Step 2: Convert to fraction form
    130,213.14/179,769.42 = 86,639.91/x
  3. Step 3: Cross multiply
    130,213.14x = 179,769.42 × 86,639.91
  4. Step 4: Simplify right side
    130,213.14x = 15,575,206,369.55
  5. Step 5: Solve for x
    x = 15,575,206,369.55/130,213.14
  6. Step 6: Final answer
    x = 119,613.17

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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.