Home / 122,288.28-168,686.34-76,894.40

Finding the Fourth Proportional to 122,288.28, 168,686.34 and 76,894.40

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Solution

The fourth proportional to 122,288.28, 168,686.34 and 76,894.40 is: 106,069.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,288.28 : 168,686.34 = 76,894.40 : x
  2. Step 2: Convert to fraction form
    122,288.28/168,686.34 = 76,894.40/x
  3. Step 3: Cross multiply
    122,288.28x = 168,686.34 × 76,894.40
  4. Step 4: Simplify right side
    122,288.28x = 12,971,034,902.50
  5. Step 5: Solve for x
    x = 12,971,034,902.50/122,288.28
  6. Step 6: Final answer
    x = 106,069.32

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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.