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Finding the Fourth Proportional to 120,001.80, 165,609.78 and 69,030.60

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Solution

The fourth proportional to 120,001.80, 165,609.78 and 69,030.60 is: 95,266.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,001.80 : 165,609.78 = 69,030.60 : x
  2. Step 2: Convert to fraction form
    120,001.80/165,609.78 = 69,030.60/x
  3. Step 3: Cross multiply
    120,001.80x = 165,609.78 × 69,030.60
  4. Step 4: Simplify right side
    120,001.80x = 11,432,142,479.27
  5. Step 5: Solve for x
    x = 11,432,142,479.27/120,001.80
  6. Step 6: Final answer
    x = 95,266.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.