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Finding the Fourth Proportional to 98,577.81, 147,644.37 and 69,127.43

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Solution

The fourth proportional to 98,577.81, 147,644.37 and 69,127.43 is: 103,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,577.81 : 147,644.37 = 69,127.43 : x
  2. Step 2: Convert to fraction form
    98,577.81/147,644.37 = 69,127.43/x
  3. Step 3: Cross multiply
    98,577.81x = 147,644.37 × 69,127.43
  4. Step 4: Simplify right side
    98,577.81x = 10,206,275,113.85
  5. Step 5: Solve for x
    x = 10,206,275,113.85/98,577.81
  6. Step 6: Final answer
    x = 103,535.22

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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.