Home / 124,301.20-186,014.40-86,684.80

Finding the Fourth Proportional to 124,301.20, 186,014.40 and 86,684.80

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Solution

The fourth proportional to 124,301.20, 186,014.40 and 86,684.80 is: 129,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,301.20 : 186,014.40 = 86,684.80 : x
  2. Step 2: Convert to fraction form
    124,301.20/186,014.40 = 86,684.80/x
  3. Step 3: Cross multiply
    124,301.20x = 186,014.40 × 86,684.80
  4. Step 4: Simplify right side
    124,301.20x = 16,124,621,061.12
  5. Step 5: Solve for x
    x = 16,124,621,061.12/124,301.20
  6. Step 6: Final answer
    x = 129,722.17

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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.