Home / 147,761.40-221,642.10-145,428.60

Finding the Fourth Proportional to 147,761.40, 221,642.10 and 145,428.60

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Solution

The fourth proportional to 147,761.40, 221,642.10 and 145,428.60 is: 218,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,761.40 : 221,642.10 = 145,428.60 : x
  2. Step 2: Convert to fraction form
    147,761.40/221,642.10 = 145,428.60/x
  3. Step 3: Cross multiply
    147,761.40x = 221,642.10 × 145,428.60
  4. Step 4: Simplify right side
    147,761.40x = 32,233,100,304.06
  5. Step 5: Solve for x
    x = 32,233,100,304.06/147,761.40
  6. Step 6: Final answer
    x = 218,142.90

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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.