Home / 120,909.40-181,364.10-83,584.60

Finding the Fourth Proportional to 120,909.40, 181,364.10 and 83,584.60

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Solution

The fourth proportional to 120,909.40, 181,364.10 and 83,584.60 is: 125,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.40 : 181,364.10 = 83,584.60 : x
  2. Step 2: Convert to fraction form
    120,909.40/181,364.10 = 83,584.60/x
  3. Step 3: Cross multiply
    120,909.40x = 181,364.10 × 83,584.60
  4. Step 4: Simplify right side
    120,909.40x = 15,159,245,752.86
  5. Step 5: Solve for x
    x = 15,159,245,752.86/120,909.40
  6. Step 6: Final answer
    x = 125,376.90

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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.