Home / 87,186.34-120,325.71-51,387.94

Finding the Fourth Proportional to 87,186.34, 120,325.71 and 51,387.94

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Solution

The fourth proportional to 87,186.34, 120,325.71 and 51,387.94 is: 70,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,186.34 : 120,325.71 = 51,387.94 : x
  2. Step 2: Convert to fraction form
    87,186.34/120,325.71 = 51,387.94/x
  3. Step 3: Cross multiply
    87,186.34x = 120,325.71 × 51,387.94
  4. Step 4: Simplify right side
    87,186.34x = 6,183,290,365.94
  5. Step 5: Solve for x
    x = 6,183,290,365.94/87,186.34
  6. Step 6: Final answer
    x = 70,920.40

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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.