Home / 130,638.70-195,666.45-100,822.60

Finding the Fourth Proportional to 130,638.70, 195,666.45 and 100,822.60

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Solution

The fourth proportional to 130,638.70, 195,666.45 and 100,822.60 is: 151,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,638.70 : 195,666.45 = 100,822.60 : x
  2. Step 2: Convert to fraction form
    130,638.70/195,666.45 = 100,822.60/x
  3. Step 3: Cross multiply
    130,638.70x = 195,666.45 × 100,822.60
  4. Step 4: Simplify right side
    130,638.70x = 19,727,600,221.77
  5. Step 5: Solve for x
    x = 19,727,600,221.77/130,638.70
  6. Step 6: Final answer
    x = 151,008.85

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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.