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Finding the Fourth Proportional to 119,410.76, 164,780.86 and 65,694.40

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Solution

The fourth proportional to 119,410.76, 164,780.86 and 65,694.40 is: 90,654.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,410.76 : 164,780.86 = 65,694.40 : x
  2. Step 2: Convert to fraction form
    119,410.76/164,780.86 = 65,694.40/x
  3. Step 3: Cross multiply
    119,410.76x = 164,780.86 × 65,694.40
  4. Step 4: Simplify right side
    119,410.76x = 10,825,179,729.18
  5. Step 5: Solve for x
    x = 10,825,179,729.18/119,410.76
  6. Step 6: Final answer
    x = 90,654.98

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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.