Home / 142,548.13-196,738.51-81,294.45

Finding the Fourth Proportional to 142,548.13, 196,738.51 and 81,294.45

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Solution

The fourth proportional to 142,548.13, 196,738.51 and 81,294.45 is: 112,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,548.13 : 196,738.51 = 81,294.45 : x
  2. Step 2: Convert to fraction form
    142,548.13/196,738.51 = 81,294.45/x
  3. Step 3: Cross multiply
    142,548.13x = 196,738.51 × 81,294.45
  4. Step 4: Simplify right side
    142,548.13x = 15,993,748,964.27
  5. Step 5: Solve for x
    x = 15,993,748,964.27/142,548.13
  6. Step 6: Final answer
    x = 112,198.94

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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.