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Finding the Fourth Proportional to 130,212.54, 195,117.78 and 87,926.90

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Solution

The fourth proportional to 130,212.54, 195,117.78 and 87,926.90 is: 131,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,212.54 : 195,117.78 = 87,926.90 : x
  2. Step 2: Convert to fraction form
    130,212.54/195,117.78 = 87,926.90/x
  3. Step 3: Cross multiply
    130,212.54x = 195,117.78 × 87,926.90
  4. Step 4: Simplify right side
    130,212.54x = 17,156,101,530.28
  5. Step 5: Solve for x
    x = 17,156,101,530.28/130,212.54
  6. Step 6: Final answer
    x = 131,754.60

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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.