Home / 132,839.58-183,315.69-72,407.90

Finding the Fourth Proportional to 132,839.58, 183,315.69 and 72,407.90

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Solution

The fourth proportional to 132,839.58, 183,315.69 and 72,407.90 is: 99,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,839.58 : 183,315.69 = 72,407.90 : x
  2. Step 2: Convert to fraction form
    132,839.58/183,315.69 = 72,407.90/x
  3. Step 3: Cross multiply
    132,839.58x = 183,315.69 × 72,407.90
  4. Step 4: Simplify right side
    132,839.58x = 13,273,504,149.95
  5. Step 5: Solve for x
    x = 13,273,504,149.95/132,839.58
  6. Step 6: Final answer
    x = 99,921.30

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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.