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Finding the Fourth Proportional to 104,593.65, 144,360.12 and 66,398.70

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Solution

The fourth proportional to 104,593.65, 144,360.12 and 66,398.70 is: 91,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,593.65 : 144,360.12 = 66,398.70 : x
  2. Step 2: Convert to fraction form
    104,593.65/144,360.12 = 66,398.70/x
  3. Step 3: Cross multiply
    104,593.65x = 144,360.12 × 66,398.70
  4. Step 4: Simplify right side
    104,593.65x = 9,585,324,299.84
  5. Step 5: Solve for x
    x = 9,585,324,299.84/104,593.65
  6. Step 6: Final answer
    x = 91,643.46

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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.