Home / 97,841.20-146,761.80-81,234.40

Finding the Fourth Proportional to 97,841.20, 146,761.80 and 81,234.40

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Solution

The fourth proportional to 97,841.20, 146,761.80 and 81,234.40 is: 121,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,841.20 : 146,761.80 = 81,234.40 : x
  2. Step 2: Convert to fraction form
    97,841.20/146,761.80 = 81,234.40/x
  3. Step 3: Cross multiply
    97,841.20x = 146,761.80 × 81,234.40
  4. Step 4: Simplify right side
    97,841.20x = 11,922,106,765.92
  5. Step 5: Solve for x
    x = 11,922,106,765.92/97,841.20
  6. Step 6: Final answer
    x = 121,851.60

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1.5x scale

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.