Home / 139,170.42-208,793.30-99,239.85

Finding the Fourth Proportional to 139,170.42, 208,793.30 and 99,239.85

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Solution

The fourth proportional to 139,170.42, 208,793.30 and 99,239.85 is: 148,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,170.42 : 208,793.30 = 99,239.85 : x
  2. Step 2: Convert to fraction form
    139,170.42/208,793.30 = 99,239.85/x
  3. Step 3: Cross multiply
    139,170.42x = 208,793.30 × 99,239.85
  4. Step 4: Simplify right side
    139,170.42x = 20,720,615,276.81
  5. Step 5: Solve for x
    x = 20,720,615,276.81/139,170.42
  6. Step 6: Final answer
    x = 148,886.63

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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.