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Finding the Fourth Proportional to 70,733.85, 106,100.81 and 18,143.34

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Solution

The fourth proportional to 70,733.85, 106,100.81 and 18,143.34 is: 27,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,733.85 : 106,100.81 = 18,143.34 : x
  2. Step 2: Convert to fraction form
    70,733.85/106,100.81 = 18,143.34/x
  3. Step 3: Cross multiply
    70,733.85x = 106,100.81 × 18,143.34
  4. Step 4: Simplify right side
    70,733.85x = 1,925,023,070.11
  5. Step 5: Solve for x
    x = 1,925,023,070.11/70,733.85
  6. Step 6: Final answer
    x = 27,215.02

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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.