Home / 142,283.88-196,443.36-91,318.56

Finding the Fourth Proportional to 142,283.88, 196,443.36 and 91,318.56

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Solution

The fourth proportional to 142,283.88, 196,443.36 and 91,318.56 is: 126,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,283.88 : 196,443.36 = 91,318.56 : x
  2. Step 2: Convert to fraction form
    142,283.88/196,443.36 = 91,318.56/x
  3. Step 3: Cross multiply
    142,283.88x = 196,443.36 × 91,318.56
  4. Step 4: Simplify right side
    142,283.88x = 17,938,924,756.76
  5. Step 5: Solve for x
    x = 17,938,924,756.76/142,283.88
  6. Step 6: Final answer
    x = 126,078.41

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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.