Home / 130,200.30-195,300.45-77,712.30

Finding the Fourth Proportional to 130,200.30, 195,300.45 and 77,712.30

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Solution

The fourth proportional to 130,200.30, 195,300.45 and 77,712.30 is: 116,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,200.30 : 195,300.45 = 77,712.30 : x
  2. Step 2: Convert to fraction form
    130,200.30/195,300.45 = 77,712.30/x
  3. Step 3: Cross multiply
    130,200.30x = 195,300.45 × 77,712.30
  4. Step 4: Simplify right side
    130,200.30x = 15,177,247,160.54
  5. Step 5: Solve for x
    x = 15,177,247,160.54/130,200.30
  6. Step 6: Final answer
    x = 116,568.45

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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.