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Finding the Fourth Proportional to 104,809.32, 144,732.96 and 66,581.16

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Solution

The fourth proportional to 104,809.32, 144,732.96 and 66,581.16 is: 91,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,809.32 : 144,732.96 = 66,581.16 : x
  2. Step 2: Convert to fraction form
    104,809.32/144,732.96 = 66,581.16/x
  3. Step 3: Cross multiply
    104,809.32x = 144,732.96 × 66,581.16
  4. Step 4: Simplify right side
    104,809.32x = 9,636,488,367.03
  5. Step 5: Solve for x
    x = 9,636,488,367.03/104,809.32
  6. Step 6: Final answer
    x = 91,943.05

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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.