Home / 87,190.07-120,326.24-51,381.59

Finding the Fourth Proportional to 87,190.07, 120,326.24 and 51,381.59

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Solution

The fourth proportional to 87,190.07, 120,326.24 and 51,381.59 is: 70,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,190.07 : 120,326.24 = 51,381.59 : x
  2. Step 2: Convert to fraction form
    87,190.07/120,326.24 = 51,381.59/x
  3. Step 3: Cross multiply
    87,190.07x = 120,326.24 × 51,381.59
  4. Step 4: Simplify right side
    87,190.07x = 6,182,553,056.74
  5. Step 5: Solve for x
    x = 6,182,553,056.74/87,190.07
  6. Step 6: Final answer
    x = 70,908.92

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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.