Home / 87,118.64-120,291.44-66,943.72

Finding the Fourth Proportional to 87,118.64, 120,291.44 and 66,943.72

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Solution

The fourth proportional to 87,118.64, 120,291.44 and 66,943.72 is: 92,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,118.64 : 120,291.44 = 66,943.72 : x
  2. Step 2: Convert to fraction form
    87,118.64/120,291.44 = 66,943.72/x
  3. Step 3: Cross multiply
    87,118.64x = 120,291.44 × 66,943.72
  4. Step 4: Simplify right side
    87,118.64x = 8,052,756,477.76
  5. Step 5: Solve for x
    x = 8,052,756,477.76/87,118.64
  6. Step 6: Final answer
    x = 92,434.37

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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.