Home / 102,923.40-154,385.10-86,010.60

Finding the Fourth Proportional to 102,923.40, 154,385.10 and 86,010.60

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Solution

The fourth proportional to 102,923.40, 154,385.10 and 86,010.60 is: 129,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,923.40 : 154,385.10 = 86,010.60 : x
  2. Step 2: Convert to fraction form
    102,923.40/154,385.10 = 86,010.60/x
  3. Step 3: Cross multiply
    102,923.40x = 154,385.10 × 86,010.60
  4. Step 4: Simplify right side
    102,923.40x = 13,278,755,082.06
  5. Step 5: Solve for x
    x = 13,278,755,082.06/102,923.40
  6. Step 6: Final answer
    x = 129,015.90

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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.