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Finding the Fourth Proportional to 110,663.40, 165,735.90 and 75,412.20

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Solution

The fourth proportional to 110,663.40, 165,735.90 and 75,412.20 is: 112,941.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,663.40 : 165,735.90 = 75,412.20 : x
  2. Step 2: Convert to fraction form
    110,663.40/165,735.90 = 75,412.20/x
  3. Step 3: Cross multiply
    110,663.40x = 165,735.90 × 75,412.20
  4. Step 4: Simplify right side
    110,663.40x = 12,498,508,837.98
  5. Step 5: Solve for x
    x = 12,498,508,837.98/110,663.40
  6. Step 6: Final answer
    x = 112,941.67

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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.