Home / 87,104.40-120,213-51,305.68

Finding the Fourth Proportional to 87,104.40, 120,213 and 51,305.68

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Solution

The fourth proportional to 87,104.40, 120,213 and 51,305.68 is: 70,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,104.40 : 120,213 = 51,305.68 : x
  2. Step 2: Convert to fraction form
    87,104.40/120,213 = 51,305.68/x
  3. Step 3: Cross multiply
    87,104.40x = 120,213 × 51,305.68
  4. Step 4: Simplify right side
    87,104.40x = 6,167,609,709.84
  5. Step 5: Solve for x
    x = 6,167,609,709.84/87,104.40
  6. Step 6: Final answer
    x = 70,807.10

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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.