Home / 142,222.56-196,265.09-77,691.02

Finding the Fourth Proportional to 142,222.56, 196,265.09 and 77,691.02

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Solution

The fourth proportional to 142,222.56, 196,265.09 and 77,691.02 is: 107,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,222.56 : 196,265.09 = 77,691.02 : x
  2. Step 2: Convert to fraction form
    142,222.56/196,265.09 = 77,691.02/x
  3. Step 3: Cross multiply
    142,222.56x = 196,265.09 × 77,691.02
  4. Step 4: Simplify right side
    142,222.56x = 15,248,034,398.71
  5. Step 5: Solve for x
    x = 15,248,034,398.71/142,222.56
  6. Step 6: Final answer
    x = 107,212.49

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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.