Home / 87,009.08-120,130.34-66,829.85

Finding the Fourth Proportional to 87,009.08, 120,130.34 and 66,829.85

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Solution

The fourth proportional to 87,009.08, 120,130.34 and 66,829.85 is: 92,269.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,009.08 : 120,130.34 = 66,829.85 : x
  2. Step 2: Convert to fraction form
    87,009.08/120,130.34 = 66,829.85/x
  3. Step 3: Cross multiply
    87,009.08x = 120,130.34 × 66,829.85
  4. Step 4: Simplify right side
    87,009.08x = 8,028,291,667.85
  5. Step 5: Solve for x
    x = 8,028,291,667.85/87,009.08
  6. Step 6: Final answer
    x = 92,269.59

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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.