Home / 141,805.40-212,708.10-138,306.20

Finding the Fourth Proportional to 141,805.40, 212,708.10 and 138,306.20

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Solution

The fourth proportional to 141,805.40, 212,708.10 and 138,306.20 is: 207,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,805.40 : 212,708.10 = 138,306.20 : x
  2. Step 2: Convert to fraction form
    141,805.40/212,708.10 = 138,306.20/x
  3. Step 3: Cross multiply
    141,805.40x = 212,708.10 × 138,306.20
  4. Step 4: Simplify right side
    141,805.40x = 29,418,849,020.22
  5. Step 5: Solve for x
    x = 29,418,849,020.22/141,805.40
  6. Step 6: Final answer
    x = 207,459.30

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1.5x scale

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.