Home / 124,780.80-187,171.20-102,619.20

Finding the Fourth Proportional to 124,780.80, 187,171.20 and 102,619.20

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Solution

The fourth proportional to 124,780.80, 187,171.20 and 102,619.20 is: 153,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,780.80 : 187,171.20 = 102,619.20 : x
  2. Step 2: Convert to fraction form
    124,780.80/187,171.20 = 102,619.20/x
  3. Step 3: Cross multiply
    124,780.80x = 187,171.20 × 102,619.20
  4. Step 4: Simplify right side
    124,780.80x = 19,207,358,807.04
  5. Step 5: Solve for x
    x = 19,207,358,807.04/124,780.80
  6. Step 6: Final answer
    x = 153,928.80

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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.