Home / 124,039.23-185,911.20-86,395.47

Finding the Fourth Proportional to 124,039.23, 185,911.20 and 86,395.47

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Solution

The fourth proportional to 124,039.23, 185,911.20 and 86,395.47 is: 129,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,039.23 : 185,911.20 = 86,395.47 : x
  2. Step 2: Convert to fraction form
    124,039.23/185,911.20 = 86,395.47/x
  3. Step 3: Cross multiply
    124,039.23x = 185,911.20 × 86,395.47
  4. Step 4: Simplify right side
    124,039.23x = 16,061,885,502.26
  5. Step 5: Solve for x
    x = 16,061,885,502.26/124,039.23
  6. Step 6: Final answer
    x = 129,490.37

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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.