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Finding the Fourth Proportional to 161,903.40, 223,479.18 and 108,200.40

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Solution

The fourth proportional to 161,903.40, 223,479.18 and 108,200.40 is: 149,351.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,903.40 : 223,479.18 = 108,200.40 : x
  2. Step 2: Convert to fraction form
    161,903.40/223,479.18 = 108,200.40/x
  3. Step 3: Cross multiply
    161,903.40x = 223,479.18 × 108,200.40
  4. Step 4: Simplify right side
    161,903.40x = 24,180,536,667.67
  5. Step 5: Solve for x
    x = 24,180,536,667.67/161,903.40
  6. Step 6: Final answer
    x = 149,351.63

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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.