Home / 135,736.08-187,335.15-78,363.93

Finding the Fourth Proportional to 135,736.08, 187,335.15 and 78,363.93

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Solution

The fourth proportional to 135,736.08, 187,335.15 and 78,363.93 is: 108,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,736.08 : 187,335.15 = 78,363.93 : x
  2. Step 2: Convert to fraction form
    135,736.08/187,335.15 = 78,363.93/x
  3. Step 3: Cross multiply
    135,736.08x = 187,335.15 × 78,363.93
  4. Step 4: Simplify right side
    135,736.08x = 14,680,319,124.10
  5. Step 5: Solve for x
    x = 14,680,319,124.10/135,736.08
  6. Step 6: Final answer
    x = 108,153.40

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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.