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Finding the Fourth Proportional to 139,353.53, 208,998.77 and 64,432.85

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Solution

The fourth proportional to 139,353.53, 208,998.77 and 64,432.85 is: 96,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,353.53 : 208,998.77 = 64,432.85 : x
  2. Step 2: Convert to fraction form
    139,353.53/208,998.77 = 64,432.85/x
  3. Step 3: Cross multiply
    139,353.53x = 208,998.77 × 64,432.85
  4. Step 4: Simplify right side
    139,353.53x = 13,466,385,030.44
  5. Step 5: Solve for x
    x = 13,466,385,030.44/139,353.53
  6. Step 6: Final answer
    x = 96,634.69

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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.