Home / 87,112.64-120,171.12-51,300.92

Finding the Fourth Proportional to 87,112.64, 120,171.12 and 51,300.92

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Solution

The fourth proportional to 87,112.64, 120,171.12 and 51,300.92 is: 70,769.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.64 : 120,171.12 = 51,300.92 : x
  2. Step 2: Convert to fraction form
    87,112.64/120,171.12 = 51,300.92/x
  3. Step 3: Cross multiply
    87,112.64x = 120,171.12 × 51,300.92
  4. Step 4: Simplify right side
    87,112.64x = 6,164,889,013.43
  5. Step 5: Solve for x
    x = 6,164,889,013.43/87,112.64
  6. Step 6: Final answer
    x = 70,769.17

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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.