Home / 87,175.34-120,271.03-56,978.09

Finding the Fourth Proportional to 87,175.34, 120,271.03 and 56,978.09

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Solution

The fourth proportional to 87,175.34, 120,271.03 and 56,978.09 is: 78,609.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,175.34 : 120,271.03 = 56,978.09 : x
  2. Step 2: Convert to fraction form
    87,175.34/120,271.03 = 56,978.09/x
  3. Step 3: Cross multiply
    87,175.34x = 120,271.03 × 56,978.09
  4. Step 4: Simplify right side
    87,175.34x = 6,852,813,363.51
  5. Step 5: Solve for x
    x = 6,852,813,363.51/87,175.34
  6. Step 6: Final answer
    x = 78,609.54

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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.