Home / 120,231.12-180,280.04-49,203.62

Finding the Fourth Proportional to 120,231.12, 180,280.04 and 49,203.62

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Solution

The fourth proportional to 120,231.12, 180,280.04 and 49,203.62 is: 73,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,231.12 : 180,280.04 = 49,203.62 : x
  2. Step 2: Convert to fraction form
    120,231.12/180,280.04 = 49,203.62/x
  3. Step 3: Cross multiply
    120,231.12x = 180,280.04 × 49,203.62
  4. Step 4: Simplify right side
    120,231.12x = 8,870,430,581.74
  5. Step 5: Solve for x
    x = 8,870,430,581.74/120,231.12
  6. Step 6: Final answer
    x = 73,778.16

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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.