Home / 124,549.20-186,618.60-71,866.80

Finding the Fourth Proportional to 124,549.20, 186,618.60 and 71,866.80

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Solution

The fourth proportional to 124,549.20, 186,618.60 and 71,866.80 is: 107,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,549.20 : 186,618.60 = 71,866.80 : x
  2. Step 2: Convert to fraction form
    124,549.20/186,618.60 = 71,866.80/x
  3. Step 3: Cross multiply
    124,549.20x = 186,618.60 × 71,866.80
  4. Step 4: Simplify right side
    124,549.20x = 13,411,681,602.48
  5. Step 5: Solve for x
    x = 13,411,681,602.48/124,549.20
  6. Step 6: Final answer
    x = 107,681.80

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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.