Home / 141,808.40-212,712.60-138,309.20

Finding the Fourth Proportional to 141,808.40, 212,712.60 and 138,309.20

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Solution

The fourth proportional to 141,808.40, 212,712.60 and 138,309.20 is: 207,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,808.40 : 212,712.60 = 138,309.20 : x
  2. Step 2: Convert to fraction form
    141,808.40/212,712.60 = 138,309.20/x
  3. Step 3: Cross multiply
    141,808.40x = 212,712.60 × 138,309.20
  4. Step 4: Simplify right side
    141,808.40x = 29,420,109,535.92
  5. Step 5: Solve for x
    x = 29,420,109,535.92/141,808.40
  6. Step 6: Final answer
    x = 207,463.80

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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.