Home / 139,437.20-208,925.96-80,322.59

Finding the Fourth Proportional to 139,437.20, 208,925.96 and 80,322.59

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Solution

The fourth proportional to 139,437.20, 208,925.96 and 80,322.59 is: 120,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,437.20 : 208,925.96 = 80,322.59 : x
  2. Step 2: Convert to fraction form
    139,437.20/208,925.96 = 80,322.59/x
  3. Step 3: Cross multiply
    139,437.20x = 208,925.96 × 80,322.59
  4. Step 4: Simplify right side
    139,437.20x = 16,781,472,779.19
  5. Step 5: Solve for x
    x = 16,781,472,779.19/139,437.20
  6. Step 6: Final answer
    x = 120,351.48

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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.