Home / 139,422.20-209,132.84-39,582.45

Finding the Fourth Proportional to 139,422.20, 209,132.84 and 39,582.45

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Solution

The fourth proportional to 139,422.20, 209,132.84 and 39,582.45 is: 59,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,422.20 : 209,132.84 = 39,582.45 : x
  2. Step 2: Convert to fraction form
    139,422.20/209,132.84 = 39,582.45/x
  3. Step 3: Cross multiply
    139,422.20x = 209,132.84 × 39,582.45
  4. Step 4: Simplify right side
    139,422.20x = 8,277,990,281.61
  5. Step 5: Solve for x
    x = 8,277,990,281.61/139,422.20
  6. Step 6: Final answer
    x = 59,373.55

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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.