Home / 81,838.08-122,757.12-70,711.11

Finding the Fourth Proportional to 81,838.08, 122,757.12 and 70,711.11

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Solution

The fourth proportional to 81,838.08, 122,757.12 and 70,711.11 is: 106,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,838.08 : 122,757.12 = 70,711.11 : x
  2. Step 2: Convert to fraction form
    81,838.08/122,757.12 = 70,711.11/x
  3. Step 3: Cross multiply
    81,838.08x = 122,757.12 × 70,711.11
  4. Step 4: Simplify right side
    81,838.08x = 8,680,292,215.60
  5. Step 5: Solve for x
    x = 8,680,292,215.60/81,838.08
  6. Step 6: Final answer
    x = 106,066.67

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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.