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Finding the Fourth Proportional to 130,358.70, 195,355.80 and 103,750.20

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Solution

The fourth proportional to 130,358.70, 195,355.80 and 103,750.20 is: 155,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,358.70 : 195,355.80 = 103,750.20 : x
  2. Step 2: Convert to fraction form
    130,358.70/195,355.80 = 103,750.20/x
  3. Step 3: Cross multiply
    130,358.70x = 195,355.80 × 103,750.20
  4. Step 4: Simplify right side
    130,358.70x = 20,268,203,321.16
  5. Step 5: Solve for x
    x = 20,268,203,321.16/130,358.70
  6. Step 6: Final answer
    x = 155,480.25

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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.