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Finding the Fourth Proportional to 99,843.36, 137,549.67 and 69,573.75

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Solution

The fourth proportional to 99,843.36, 137,549.67 and 69,573.75 is: 95,848.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,843.36 : 137,549.67 = 69,573.75 : x
  2. Step 2: Convert to fraction form
    99,843.36/137,549.67 = 69,573.75/x
  3. Step 3: Cross multiply
    99,843.36x = 137,549.67 × 69,573.75
  4. Step 4: Simplify right side
    99,843.36x = 9,569,846,009.29
  5. Step 5: Solve for x
    x = 9,569,846,009.29/99,843.36
  6. Step 6: Final answer
    x = 95,848.60

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1.5x scale

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.