Home / 143,721.40-215,582.10-141,388.60

Finding the Fourth Proportional to 143,721.40, 215,582.10 and 141,388.60

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Solution

The fourth proportional to 143,721.40, 215,582.10 and 141,388.60 is: 212,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.40 : 215,582.10 = 141,388.60 : x
  2. Step 2: Convert to fraction form
    143,721.40/215,582.10 = 141,388.60/x
  3. Step 3: Cross multiply
    143,721.40x = 215,582.10 × 141,388.60
  4. Step 4: Simplify right side
    143,721.40x = 30,480,851,304.06
  5. Step 5: Solve for x
    x = 30,480,851,304.06/143,721.40
  6. Step 6: Final answer
    x = 212,082.90

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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.