Home / 202,521.90-279,146.88-143,605.20

Finding the Fourth Proportional to 202,521.90, 279,146.88 and 143,605.20

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Solution

The fourth proportional to 202,521.90, 279,146.88 and 143,605.20 is: 197,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,521.90 : 279,146.88 = 143,605.20 : x
  2. Step 2: Convert to fraction form
    202,521.90/279,146.88 = 143,605.20/x
  3. Step 3: Cross multiply
    202,521.90x = 279,146.88 × 143,605.20
  4. Step 4: Simplify right side
    202,521.90x = 40,086,943,531.78
  5. Step 5: Solve for x
    x = 40,086,943,531.78/202,521.90
  6. Step 6: Final answer
    x = 197,938.81

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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.