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Finding the Fourth Proportional to 109,752.84, 151,353.90 and 66,739.68

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Solution

The fourth proportional to 109,752.84, 151,353.90 and 66,739.68 is: 92,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,752.84 : 151,353.90 = 66,739.68 : x
  2. Step 2: Convert to fraction form
    109,752.84/151,353.90 = 66,739.68/x
  3. Step 3: Cross multiply
    109,752.84x = 151,353.90 × 66,739.68
  4. Step 4: Simplify right side
    109,752.84x = 10,101,310,852.75
  5. Step 5: Solve for x
    x = 10,101,310,852.75/109,752.84
  6. Step 6: Final answer
    x = 92,036.90

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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.