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Finding the Fourth Proportional to 141,065.70, 194,670.65 and 80,637.64

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Solution

The fourth proportional to 141,065.70, 194,670.65 and 80,637.64 is: 111,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,065.70 : 194,670.65 = 80,637.64 : x
  2. Step 2: Convert to fraction form
    141,065.70/194,670.65 = 80,637.64/x
  3. Step 3: Cross multiply
    141,065.70x = 194,670.65 × 80,637.64
  4. Step 4: Simplify right side
    141,065.70x = 15,697,781,793.27
  5. Step 5: Solve for x
    x = 15,697,781,793.27/141,065.70
  6. Step 6: Final answer
    x = 111,279.93

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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.