Home / 189,715.25-284,584.01-71,387.61

Finding the Fourth Proportional to 189,715.25, 284,584.01 and 71,387.61

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Solution

The fourth proportional to 189,715.25, 284,584.01 and 71,387.61 is: 107,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,715.25 : 284,584.01 = 71,387.61 : x
  2. Step 2: Convert to fraction form
    189,715.25/284,584.01 = 71,387.61/x
  3. Step 3: Cross multiply
    189,715.25x = 284,584.01 × 71,387.61
  4. Step 4: Simplify right side
    189,715.25x = 20,315,771,961.18
  5. Step 5: Solve for x
    x = 20,315,771,961.18/189,715.25
  6. Step 6: Final answer
    x = 107,085.61

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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.