Home / 124,089.20-185,928.60-71,406.80

Finding the Fourth Proportional to 124,089.20, 185,928.60 and 71,406.80

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Solution

The fourth proportional to 124,089.20, 185,928.60 and 71,406.80 is: 106,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,089.20 : 185,928.60 = 71,406.80 : x
  2. Step 2: Convert to fraction form
    124,089.20/185,928.60 = 71,406.80/x
  3. Step 3: Cross multiply
    124,089.20x = 185,928.60 × 71,406.80
  4. Step 4: Simplify right side
    124,089.20x = 13,276,566,354.48
  5. Step 5: Solve for x
    x = 13,276,566,354.48/124,089.20
  6. Step 6: Final answer
    x = 106,992.12

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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.