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Finding the Fourth Proportional to 109,401.40, 163,774.05 and 102,913.30

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Solution

The fourth proportional to 109,401.40, 163,774.05 and 102,913.30 is: 154,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,401.40 : 163,774.05 = 102,913.30 : x
  2. Step 2: Convert to fraction form
    109,401.40/163,774.05 = 102,913.30/x
  3. Step 3: Cross multiply
    109,401.40x = 163,774.05 × 102,913.30
  4. Step 4: Simplify right side
    109,401.40x = 16,854,527,939.87
  5. Step 5: Solve for x
    x = 16,854,527,939.87/109,401.40
  6. Step 6: Final answer
    x = 154,061.36

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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.