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Finding the Fourth Proportional to 109,964.70, 164,947.05 and 74,972.70

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Solution

The fourth proportional to 109,964.70, 164,947.05 and 74,972.70 is: 112,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,964.70 : 164,947.05 = 74,972.70 : x
  2. Step 2: Convert to fraction form
    109,964.70/164,947.05 = 74,972.70/x
  3. Step 3: Cross multiply
    109,964.70x = 164,947.05 × 74,972.70
  4. Step 4: Simplify right side
    109,964.70x = 12,366,525,695.54
  5. Step 5: Solve for x
    x = 12,366,525,695.54/109,964.70
  6. Step 6: Final answer
    x = 112,459.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.