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Finding the Fourth Proportional to 139,839.32, 209,618.53 and 44,999.80

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Solution

The fourth proportional to 139,839.32, 209,618.53 and 44,999.80 is: 67,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,839.32 : 209,618.53 = 44,999.80 : x
  2. Step 2: Convert to fraction form
    139,839.32/209,618.53 = 44,999.80/x
  3. Step 3: Cross multiply
    139,839.32x = 209,618.53 × 44,999.80
  4. Step 4: Simplify right side
    139,839.32x = 9,432,791,926.29
  5. Step 5: Solve for x
    x = 9,432,791,926.29/139,839.32
  6. Step 6: Final answer
    x = 67,454.50

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1.5x scale

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.