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Finding the Fourth Proportional to 130,489.59, 195,734.40 and 31,993.59

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Solution

The fourth proportional to 130,489.59, 195,734.40 and 31,993.59 is: 47,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,489.59 : 195,734.40 = 31,993.59 : x
  2. Step 2: Convert to fraction form
    130,489.59/195,734.40 = 31,993.59/x
  3. Step 3: Cross multiply
    130,489.59x = 195,734.40 × 31,993.59
  4. Step 4: Simplify right side
    130,489.59x = 6,262,246,142.50
  5. Step 5: Solve for x
    x = 6,262,246,142.50/130,489.59
  6. Step 6: Final answer
    x = 47,990.39

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Double scale
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Similar ratio
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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.