Home / 103,040.28-142,059.51-74,335.95

Finding the Fourth Proportional to 103,040.28, 142,059.51 and 74,335.95

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Solution

The fourth proportional to 103,040.28, 142,059.51 and 74,335.95 is: 102,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.28 : 142,059.51 = 74,335.95 : x
  2. Step 2: Convert to fraction form
    103,040.28/142,059.51 = 74,335.95/x
  3. Step 3: Cross multiply
    103,040.28x = 142,059.51 × 74,335.95
  4. Step 4: Simplify right side
    103,040.28x = 10,560,128,632.38
  5. Step 5: Solve for x
    x = 10,560,128,632.38/103,040.28
  6. Step 6: Final answer
    x = 102,485.44

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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.