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Finding the Fourth Proportional to 130,014.70, 195,022.05 and 80,862.70

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Solution

The fourth proportional to 130,014.70, 195,022.05 and 80,862.70 is: 121,294.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,014.70 : 195,022.05 = 80,862.70 : x
  2. Step 2: Convert to fraction form
    130,014.70/195,022.05 = 80,862.70/x
  3. Step 3: Cross multiply
    130,014.70x = 195,022.05 × 80,862.70
  4. Step 4: Simplify right side
    130,014.70x = 15,770,009,522.54
  5. Step 5: Solve for x
    x = 15,770,009,522.54/130,014.70
  6. Step 6: Final answer
    x = 121,294.05

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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.