Home / 122,165.60-168,559.04-81,864.64

Finding the Fourth Proportional to 122,165.60, 168,559.04 and 81,864.64

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Solution

The fourth proportional to 122,165.60, 168,559.04 and 81,864.64 is: 112,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,165.60 : 168,559.04 = 81,864.64 : x
  2. Step 2: Convert to fraction form
    122,165.60/168,559.04 = 81,864.64/x
  3. Step 3: Cross multiply
    122,165.60x = 168,559.04 × 81,864.64
  4. Step 4: Simplify right side
    122,165.60x = 13,799,025,128.35
  5. Step 5: Solve for x
    x = 13,799,025,128.35/122,165.60
  6. Step 6: Final answer
    x = 112,953.44

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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.