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Finding the Fourth Proportional to 120,001.90, 165,601.58 and 66,290.67

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Solution

The fourth proportional to 120,001.90, 165,601.58 and 66,290.67 is: 91,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,001.90 : 165,601.58 = 66,290.67 : x
  2. Step 2: Convert to fraction form
    120,001.90/165,601.58 = 66,290.67/x
  3. Step 3: Cross multiply
    120,001.90x = 165,601.58 × 66,290.67
  4. Step 4: Simplify right side
    120,001.90x = 10,977,839,691.26
  5. Step 5: Solve for x
    x = 10,977,839,691.26/120,001.90
  6. Step 6: Final answer
    x = 91,480.55

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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.