Home / 111,487.12-167,143.20-76,320.16

Finding the Fourth Proportional to 111,487.12, 167,143.20 and 76,320.16

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Solution

The fourth proportional to 111,487.12, 167,143.20 and 76,320.16 is: 114,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,487.12 : 167,143.20 = 76,320.16 : x
  2. Step 2: Convert to fraction form
    111,487.12/167,143.20 = 76,320.16/x
  3. Step 3: Cross multiply
    111,487.12x = 167,143.20 × 76,320.16
  4. Step 4: Simplify right side
    111,487.12x = 12,756,395,766.91
  5. Step 5: Solve for x
    x = 12,756,395,766.91/111,487.12
  6. Step 6: Final answer
    x = 114,420.35

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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.