Home / 130,102.10-195,009.68-85,104.78

Finding the Fourth Proportional to 130,102.10, 195,009.68 and 85,104.78

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Solution

The fourth proportional to 130,102.10, 195,009.68 and 85,104.78 is: 127,563.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,102.10 : 195,009.68 = 85,104.78 : x
  2. Step 2: Convert to fraction form
    130,102.10/195,009.68 = 85,104.78/x
  3. Step 3: Cross multiply
    130,102.10x = 195,009.68 × 85,104.78
  4. Step 4: Simplify right side
    130,102.10x = 16,596,254,917.03
  5. Step 5: Solve for x
    x = 16,596,254,917.03/130,102.10
  6. Step 6: Final answer
    x = 127,563.31

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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.