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Finding the Fourth Proportional to 109,903.20, 154,214.40 and 109,903.20

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Solution

The fourth proportional to 109,903.20, 154,214.40 and 109,903.20 is: 154,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,903.20 : 154,214.40 = 109,903.20 : x
  2. Step 2: Convert to fraction form
    109,903.20/154,214.40 = 109,903.20/x
  3. Step 3: Cross multiply
    109,903.20x = 154,214.40 × 109,903.20
  4. Step 4: Simplify right side
    109,903.20x = 16,948,656,046.08
  5. Step 5: Solve for x
    x = 16,948,656,046.08/109,903.20
  6. Step 6: Final answer
    x = 154,214.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.