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Finding the Fourth Proportional to 99,750.81, 137,614.82 and 69,554.01

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Solution

The fourth proportional to 99,750.81, 137,614.82 and 69,554.01 is: 95,955.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,750.81 : 137,614.82 = 69,554.01 : x
  2. Step 2: Convert to fraction form
    99,750.81/137,614.82 = 69,554.01/x
  3. Step 3: Cross multiply
    99,750.81x = 137,614.82 × 69,554.01
  4. Step 4: Simplify right side
    99,750.81x = 9,571,662,218.66
  5. Step 5: Solve for x
    x = 9,571,662,218.66/99,750.81
  6. Step 6: Final answer
    x = 95,955.73

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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.