Home / 70,805.20-106,211.64-18,215.12

Finding the Fourth Proportional to 70,805.20, 106,211.64 and 18,215.12

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Solution

The fourth proportional to 70,805.20, 106,211.64 and 18,215.12 is: 27,323.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,805.20 : 106,211.64 = 18,215.12 : x
  2. Step 2: Convert to fraction form
    70,805.20/106,211.64 = 18,215.12/x
  3. Step 3: Cross multiply
    70,805.20x = 106,211.64 × 18,215.12
  4. Step 4: Simplify right side
    70,805.20x = 1,934,657,768.00
  5. Step 5: Solve for x
    x = 1,934,657,768.00/70,805.20
  6. Step 6: Final answer
    x = 27,323.67

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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.