Home / 122,126.16-168,439.32-81,827.04

Finding the Fourth Proportional to 122,126.16, 168,439.32 and 81,827.04

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Solution

The fourth proportional to 122,126.16, 168,439.32 and 81,827.04 is: 112,857.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,126.16 : 168,439.32 = 81,827.04 : x
  2. Step 2: Convert to fraction form
    122,126.16/168,439.32 = 81,827.04/x
  3. Step 3: Cross multiply
    122,126.16x = 168,439.32 × 81,827.04
  4. Step 4: Simplify right side
    122,126.16x = 13,782,890,975.21
  5. Step 5: Solve for x
    x = 13,782,890,975.21/122,126.16
  6. Step 6: Final answer
    x = 112,857.81

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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.