Home / 134,839.30-202,315.65-72,436.90

Finding the Fourth Proportional to 134,839.30, 202,315.65 and 72,436.90

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Solution

The fourth proportional to 134,839.30, 202,315.65 and 72,436.90 is: 108,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,839.30 : 202,315.65 = 72,436.90 : x
  2. Step 2: Convert to fraction form
    134,839.30/202,315.65 = 72,436.90/x
  3. Step 3: Cross multiply
    134,839.30x = 202,315.65 × 72,436.90
  4. Step 4: Simplify right side
    134,839.30x = 14,655,118,507.49
  5. Step 5: Solve for x
    x = 14,655,118,507.49/134,839.30
  6. Step 6: Final answer
    x = 108,685.81

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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.