Home / 142,177.74-196,205.36-77,647.88

Finding the Fourth Proportional to 142,177.74, 196,205.36 and 77,647.88

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Solution

The fourth proportional to 142,177.74, 196,205.36 and 77,647.88 is: 107,154.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,177.74 : 196,205.36 = 77,647.88 : x
  2. Step 2: Convert to fraction form
    142,177.74/196,205.36 = 77,647.88/x
  3. Step 3: Cross multiply
    142,177.74x = 196,205.36 × 77,647.88
  4. Step 4: Simplify right side
    142,177.74x = 15,234,928,879.37
  5. Step 5: Solve for x
    x = 15,234,928,879.37/142,177.74
  6. Step 6: Final answer
    x = 107,154.11

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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.