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Finding the Fourth Proportional to 130,009.20, 195,013.80 and 115,234.80

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Solution

The fourth proportional to 130,009.20, 195,013.80 and 115,234.80 is: 172,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,009.20 : 195,013.80 = 115,234.80 : x
  2. Step 2: Convert to fraction form
    130,009.20/195,013.80 = 115,234.80/x
  3. Step 3: Cross multiply
    130,009.20x = 195,013.80 × 115,234.80
  4. Step 4: Simplify right side
    130,009.20x = 22,472,376,240.24
  5. Step 5: Solve for x
    x = 22,472,376,240.24/130,009.20
  6. Step 6: Final answer
    x = 172,852.20

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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.