Home / 105,722.20-145,903.38-69,849.28

Finding the Fourth Proportional to 105,722.20, 145,903.38 and 69,849.28

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Solution

The fourth proportional to 105,722.20, 145,903.38 and 69,849.28 is: 96,396.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,722.20 : 145,903.38 = 69,849.28 : x
  2. Step 2: Convert to fraction form
    105,722.20/145,903.38 = 69,849.28/x
  3. Step 3: Cross multiply
    105,722.20x = 145,903.38 × 69,849.28
  4. Step 4: Simplify right side
    105,722.20x = 10,191,246,042.57
  5. Step 5: Solve for x
    x = 10,191,246,042.57/105,722.20
  6. Step 6: Final answer
    x = 96,396.46

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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.