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Finding the Fourth Proportional to 126,458.70, 189,700.80 and 41,065.98

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Solution

The fourth proportional to 126,458.70, 189,700.80 and 41,065.98 is: 61,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,458.70 : 189,700.80 = 41,065.98 : x
  2. Step 2: Convert to fraction form
    126,458.70/189,700.80 = 41,065.98/x
  3. Step 3: Cross multiply
    126,458.70x = 189,700.80 × 41,065.98
  4. Step 4: Simplify right side
    126,458.70x = 7,790,249,258.78
  5. Step 5: Solve for x
    x = 7,790,249,258.78/126,458.70
  6. Step 6: Final answer
    x = 61,603.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.