Home / 139,423.32-209,142.90-39,575.61

Finding the Fourth Proportional to 139,423.32, 209,142.90 and 39,575.61

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Solution

The fourth proportional to 139,423.32, 209,142.90 and 39,575.61 is: 59,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,423.32 : 209,142.90 = 39,575.61 : x
  2. Step 2: Convert to fraction form
    139,423.32/209,142.90 = 39,575.61/x
  3. Step 3: Cross multiply
    139,423.32x = 209,142.90 × 39,575.61
  4. Step 4: Simplify right side
    139,423.32x = 8,276,957,844.67
  5. Step 5: Solve for x
    x = 8,276,957,844.67/139,423.32
  6. Step 6: Final answer
    x = 59,365.66

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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.