Home / 130,623.29-195,990.41-71,389.76

Finding the Fourth Proportional to 130,623.29, 195,990.41 and 71,389.76

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Solution

The fourth proportional to 130,623.29, 195,990.41 and 71,389.76 is: 107,114.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,623.29 : 195,990.41 = 71,389.76 : x
  2. Step 2: Convert to fraction form
    130,623.29/195,990.41 = 71,389.76/x
  3. Step 3: Cross multiply
    130,623.29x = 195,990.41 × 71,389.76
  4. Step 4: Simplify right side
    130,623.29x = 13,991,708,332.20
  5. Step 5: Solve for x
    x = 13,991,708,332.20/130,623.29
  6. Step 6: Final answer
    x = 107,114.96

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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.