Home / 139,820.40-209,543.49-50,990.13

Finding the Fourth Proportional to 139,820.40, 209,543.49 and 50,990.13

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Solution

The fourth proportional to 139,820.40, 209,543.49 and 50,990.13 is: 76,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,820.40 : 209,543.49 = 50,990.13 : x
  2. Step 2: Convert to fraction form
    139,820.40/209,543.49 = 50,990.13/x
  3. Step 3: Cross multiply
    139,820.40x = 209,543.49 × 50,990.13
  4. Step 4: Simplify right side
    139,820.40x = 10,684,649,795.75
  5. Step 5: Solve for x
    x = 10,684,649,795.75/139,820.40
  6. Step 6: Final answer
    x = 76,416.96

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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.