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Finding the Fourth Proportional to 109,389.70, 164,084.55 and 73,960.30

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Solution

The fourth proportional to 109,389.70, 164,084.55 and 73,960.30 is: 110,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,389.70 : 164,084.55 = 73,960.30 : x
  2. Step 2: Convert to fraction form
    109,389.70/164,084.55 = 73,960.30/x
  3. Step 3: Cross multiply
    109,389.70x = 164,084.55 × 73,960.30
  4. Step 4: Simplify right side
    109,389.70x = 12,135,742,543.37
  5. Step 5: Solve for x
    x = 12,135,742,543.37/109,389.70
  6. Step 6: Final answer
    x = 110,940.45

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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.