Home / 120,085.36-180,131.12-56,890.68

Finding the Fourth Proportional to 120,085.36, 180,131.12 and 56,890.68

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Solution

The fourth proportional to 120,085.36, 180,131.12 and 56,890.68 is: 85,337.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,085.36 : 180,131.12 = 56,890.68 : x
  2. Step 2: Convert to fraction form
    120,085.36/180,131.12 = 56,890.68/x
  3. Step 3: Cross multiply
    120,085.36x = 180,131.12 × 56,890.68
  4. Step 4: Simplify right side
    120,085.36x = 10,247,781,905.96
  5. Step 5: Solve for x
    x = 10,247,781,905.96/120,085.36
  6. Step 6: Final answer
    x = 85,337.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.