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Finding the Fourth Proportional to 120,048.84, 165,659.04 and 66,332.88

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Solution

The fourth proportional to 120,048.84, 165,659.04 and 66,332.88 is: 91,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,048.84 : 165,659.04 = 66,332.88 : x
  2. Step 2: Convert to fraction form
    120,048.84/165,659.04 = 66,332.88/x
  3. Step 3: Cross multiply
    120,048.84x = 165,659.04 × 66,332.88
  4. Step 4: Simplify right side
    120,048.84x = 10,988,641,221.24
  5. Step 5: Solve for x
    x = 10,988,641,221.24/120,048.84
  6. Step 6: Final answer
    x = 91,534.76

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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.