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Finding the Fourth Proportional to 110,421.80, 165,632.70 and 55,125.80

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Solution

The fourth proportional to 110,421.80, 165,632.70 and 55,125.80 is: 82,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,421.80 : 165,632.70 = 55,125.80 : x
  2. Step 2: Convert to fraction form
    110,421.80/165,632.70 = 55,125.80/x
  3. Step 3: Cross multiply
    110,421.80x = 165,632.70 × 55,125.80
  4. Step 4: Simplify right side
    110,421.80x = 9,130,635,093.66
  5. Step 5: Solve for x
    x = 9,130,635,093.66/110,421.80
  6. Step 6: Final answer
    x = 82,688.70

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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.