Home / 148,862.40-205,431.10-80,879.36

Finding the Fourth Proportional to 148,862.40, 205,431.10 and 80,879.36

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Solution

The fourth proportional to 148,862.40, 205,431.10 and 80,879.36 is: 111,614.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,862.40 : 205,431.10 = 80,879.36 : x
  2. Step 2: Convert to fraction form
    148,862.40/205,431.10 = 80,879.36/x
  3. Step 3: Cross multiply
    148,862.40x = 205,431.10 × 80,879.36
  4. Step 4: Simplify right side
    148,862.40x = 16,615,135,892.10
  5. Step 5: Solve for x
    x = 16,615,135,892.10/148,862.40
  6. Step 6: Final answer
    x = 111,614.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.