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Finding the Fourth Proportional to 109,322.70, 163,984.05 and 74,330.70

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Solution

The fourth proportional to 109,322.70, 163,984.05 and 74,330.70 is: 111,496.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,322.70 : 163,984.05 = 74,330.70 : x
  2. Step 2: Convert to fraction form
    109,322.70/163,984.05 = 74,330.70/x
  3. Step 3: Cross multiply
    109,322.70x = 163,984.05 × 74,330.70
  4. Step 4: Simplify right side
    109,322.70x = 12,189,049,225.34
  5. Step 5: Solve for x
    x = 12,189,049,225.34/109,322.70
  6. Step 6: Final answer
    x = 111,496.05

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Similar ratio
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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.