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Finding the Fourth Proportional to 191,987.50, 264,949.96 and 107,120.92

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Solution

The fourth proportional to 191,987.50, 264,949.96 and 107,120.92 is: 147,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,987.50 : 264,949.96 = 107,120.92 : x
  2. Step 2: Convert to fraction form
    191,987.50/264,949.96 = 107,120.92/x
  3. Step 3: Cross multiply
    191,987.50x = 264,949.96 × 107,120.92
  4. Step 4: Simplify right side
    191,987.50x = 28,381,683,469.16
  5. Step 5: Solve for x
    x = 28,381,683,469.16/191,987.50
  6. Step 6: Final answer
    x = 147,830.89

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1.5x scale

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.