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Finding the Fourth Proportional to 109,645.40, 164,468.10 and 83,401.40

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Solution

The fourth proportional to 109,645.40, 164,468.10 and 83,401.40 is: 125,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,645.40 : 164,468.10 = 83,401.40 : x
  2. Step 2: Convert to fraction form
    109,645.40/164,468.10 = 83,401.40/x
  3. Step 3: Cross multiply
    109,645.40x = 164,468.10 × 83,401.40
  4. Step 4: Simplify right side
    109,645.40x = 13,716,869,795.34
  5. Step 5: Solve for x
    x = 13,716,869,795.34/109,645.40
  6. Step 6: Final answer
    x = 125,102.10

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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.