Home / 124,987.20-187,480.80-51,115.20

Finding the Fourth Proportional to 124,987.20, 187,480.80 and 51,115.20

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Solution

The fourth proportional to 124,987.20, 187,480.80 and 51,115.20 is: 76,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,987.20 : 187,480.80 = 51,115.20 : x
  2. Step 2: Convert to fraction form
    124,987.20/187,480.80 = 51,115.20/x
  3. Step 3: Cross multiply
    124,987.20x = 187,480.80 × 51,115.20
  4. Step 4: Simplify right side
    124,987.20x = 9,583,118,588.16
  5. Step 5: Solve for x
    x = 9,583,118,588.16/124,987.20
  6. Step 6: Final answer
    x = 76,672.80

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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.