Home / 129,528.15-194,309.90-45,268.76

Finding the Fourth Proportional to 129,528.15, 194,309.90 and 45,268.76

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Solution

The fourth proportional to 129,528.15, 194,309.90 and 45,268.76 is: 67,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,528.15 : 194,309.90 = 45,268.76 : x
  2. Step 2: Convert to fraction form
    129,528.15/194,309.90 = 45,268.76/x
  3. Step 3: Cross multiply
    129,528.15x = 194,309.90 × 45,268.76
  4. Step 4: Simplify right side
    129,528.15x = 8,796,167,030.83
  5. Step 5: Solve for x
    x = 8,796,167,030.83/129,528.15
  6. Step 6: Final answer
    x = 67,909.31

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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.