Home / 87,045.66-120,190.80-66,870.54

Finding the Fourth Proportional to 87,045.66, 120,190.80 and 66,870.54

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Solution

The fourth proportional to 87,045.66, 120,190.80 and 66,870.54 is: 92,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,045.66 : 120,190.80 = 66,870.54 : x
  2. Step 2: Convert to fraction form
    87,045.66/120,190.80 = 66,870.54/x
  3. Step 3: Cross multiply
    87,045.66x = 120,190.80 × 66,870.54
  4. Step 4: Simplify right side
    87,045.66x = 8,037,223,699.03
  5. Step 5: Solve for x
    x = 8,037,223,699.03/87,045.66
  6. Step 6: Final answer
    x = 92,333.42

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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.