Home / 122,281.94-168,763.13-81,443.81

Finding the Fourth Proportional to 122,281.94, 168,763.13 and 81,443.81

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Solution

The fourth proportional to 122,281.94, 168,763.13 and 81,443.81 is: 112,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,281.94 : 168,763.13 = 81,443.81 : x
  2. Step 2: Convert to fraction form
    122,281.94/168,763.13 = 81,443.81/x
  3. Step 3: Cross multiply
    122,281.94x = 168,763.13 × 81,443.81
  4. Step 4: Simplify right side
    122,281.94x = 13,744,711,043.69
  5. Step 5: Solve for x
    x = 13,744,711,043.69/122,281.94
  6. Step 6: Final answer
    x = 112,401.81

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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.