Home / 187,140.15-280,821.39-68,894.52

Finding the Fourth Proportional to 187,140.15, 280,821.39 and 68,894.52

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Solution

The fourth proportional to 187,140.15, 280,821.39 and 68,894.52 is: 103,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,140.15 : 280,821.39 = 68,894.52 : x
  2. Step 2: Convert to fraction form
    187,140.15/280,821.39 = 68,894.52/x
  3. Step 3: Cross multiply
    187,140.15x = 280,821.39 × 68,894.52
  4. Step 4: Simplify right side
    187,140.15x = 19,347,054,869.78
  5. Step 5: Solve for x
    x = 19,347,054,869.78/187,140.15
  6. Step 6: Final answer
    x = 103,382.70

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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.