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Finding the Fourth Proportional to 99,851.80, 149,702.82 and 60,400.84

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Solution

The fourth proportional to 99,851.80, 149,702.82 and 60,400.84 is: 90,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,851.80 : 149,702.82 = 60,400.84 : x
  2. Step 2: Convert to fraction form
    99,851.80/149,702.82 = 60,400.84/x
  3. Step 3: Cross multiply
    99,851.80x = 149,702.82 × 60,400.84
  4. Step 4: Simplify right side
    99,851.80x = 9,042,176,078.37
  5. Step 5: Solve for x
    x = 9,042,176,078.37/99,851.80
  6. Step 6: Final answer
    x = 90,555.96

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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.