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Finding the Fourth Proportional to 122,388.95, 168,898.11 and 67,944.80

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Solution

The fourth proportional to 122,388.95, 168,898.11 and 67,944.80 is: 93,764.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,388.95 : 168,898.11 = 67,944.80 : x
  2. Step 2: Convert to fraction form
    122,388.95/168,898.11 = 67,944.80/x
  3. Step 3: Cross multiply
    122,388.95x = 168,898.11 × 67,944.80
  4. Step 4: Simplify right side
    122,388.95x = 11,475,748,262.46
  5. Step 5: Solve for x
    x = 11,475,748,262.46/122,388.95
  6. Step 6: Final answer
    x = 93,764.58

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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.