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Finding the Fourth Proportional to 122,298.30, 168,700.14 and 76,904.40

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Solution

The fourth proportional to 122,298.30, 168,700.14 and 76,904.40 is: 106,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,298.30 : 168,700.14 = 76,904.40 : x
  2. Step 2: Convert to fraction form
    122,298.30/168,700.14 = 76,904.40/x
  3. Step 3: Cross multiply
    122,298.30x = 168,700.14 × 76,904.40
  4. Step 4: Simplify right side
    122,298.30x = 12,973,783,046.62
  5. Step 5: Solve for x
    x = 12,973,783,046.62/122,298.30
  6. Step 6: Final answer
    x = 106,083.10

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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.