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Finding the Fourth Proportional to 100,987.70, 151,481.55 and 34,502.90

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Solution

The fourth proportional to 100,987.70, 151,481.55 and 34,502.90 is: 51,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,987.70 : 151,481.55 = 34,502.90 : x
  2. Step 2: Convert to fraction form
    100,987.70/151,481.55 = 34,502.90/x
  3. Step 3: Cross multiply
    100,987.70x = 151,481.55 × 34,502.90
  4. Step 4: Simplify right side
    100,987.70x = 5,226,552,771.50
  5. Step 5: Solve for x
    x = 5,226,552,771.50/100,987.70
  6. Step 6: Final answer
    x = 51,754.35

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1.5x scale

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.