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Finding the Fourth Proportional to 191,908.08, 287,870.76 and 58,778.64

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Solution

The fourth proportional to 191,908.08, 287,870.76 and 58,778.64 is: 88,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,908.08 : 287,870.76 = 58,778.64 : x
  2. Step 2: Convert to fraction form
    191,908.08/287,870.76 = 58,778.64/x
  3. Step 3: Cross multiply
    191,908.08x = 287,870.76 × 58,778.64
  4. Step 4: Simplify right side
    191,908.08x = 16,920,651,768.57
  5. Step 5: Solve for x
    x = 16,920,651,768.57/191,908.08
  6. Step 6: Final answer
    x = 88,170.61

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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.