Home / 187,319.76-280,979.64-68,947.44

Finding the Fourth Proportional to 187,319.76, 280,979.64 and 68,947.44

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Solution

The fourth proportional to 187,319.76, 280,979.64 and 68,947.44 is: 103,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,319.76 : 280,979.64 = 68,947.44 : x
  2. Step 2: Convert to fraction form
    187,319.76/280,979.64 = 68,947.44/x
  3. Step 3: Cross multiply
    187,319.76x = 280,979.64 × 68,947.44
  4. Step 4: Simplify right side
    187,319.76x = 19,372,826,870.12
  5. Step 5: Solve for x
    x = 19,372,826,870.12/187,319.76
  6. Step 6: Final answer
    x = 103,421.16

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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.