Home / 145,645.20-218,492.70-66,766.20

Finding the Fourth Proportional to 145,645.20, 218,492.70 and 66,766.20

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Solution

The fourth proportional to 145,645.20, 218,492.70 and 66,766.20 is: 100,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,645.20 : 218,492.70 = 66,766.20 : x
  2. Step 2: Convert to fraction form
    145,645.20/218,492.70 = 66,766.20/x
  3. Step 3: Cross multiply
    145,645.20x = 218,492.70 × 66,766.20
  4. Step 4: Simplify right side
    145,645.20x = 14,587,927,306.74
  5. Step 5: Solve for x
    x = 14,587,927,306.74/145,645.20
  6. Step 6: Final answer
    x = 100,160.71

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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.