Home / 129,559.25-178,836.51-75,861.53

Finding the Fourth Proportional to 129,559.25, 178,836.51 and 75,861.53

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Solution

The fourth proportional to 129,559.25, 178,836.51 and 75,861.53 is: 104,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,559.25 : 178,836.51 = 75,861.53 : x
  2. Step 2: Convert to fraction form
    129,559.25/178,836.51 = 75,861.53/x
  3. Step 3: Cross multiply
    129,559.25x = 178,836.51 × 75,861.53
  4. Step 4: Simplify right side
    129,559.25x = 13,566,811,268.46
  5. Step 5: Solve for x
    x = 13,566,811,268.46/129,559.25
  6. Step 6: Final answer
    x = 104,715.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.