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Finding the Fourth Proportional to 110,368.80, 165,553.20 and 86,749.20

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Solution

The fourth proportional to 110,368.80, 165,553.20 and 86,749.20 is: 130,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,368.80 : 165,553.20 = 86,749.20 : x
  2. Step 2: Convert to fraction form
    110,368.80/165,553.20 = 86,749.20/x
  3. Step 3: Cross multiply
    110,368.80x = 165,553.20 × 86,749.20
  4. Step 4: Simplify right side
    110,368.80x = 14,361,607,657.44
  5. Step 5: Solve for x
    x = 14,361,607,657.44/110,368.80
  6. Step 6: Final answer
    x = 130,123.80

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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.