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Finding the Fourth Proportional to 96,456.80, 145,030.80 and 81,250.40

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Solution

The fourth proportional to 96,456.80, 145,030.80 and 81,250.40 is: 122,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,456.80 : 145,030.80 = 81,250.40 : x
  2. Step 2: Convert to fraction form
    96,456.80/145,030.80 = 81,250.40/x
  3. Step 3: Cross multiply
    96,456.80x = 145,030.80 × 81,250.40
  4. Step 4: Simplify right side
    96,456.80x = 11,783,810,512.32
  5. Step 5: Solve for x
    x = 11,783,810,512.32/96,456.80
  6. Step 6: Final answer
    x = 122,166.72

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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.