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Finding the Fourth Proportional to 120,047.66, 165,681.78 and 69,059.12

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Solution

The fourth proportional to 120,047.66, 165,681.78 and 69,059.12 is: 95,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,047.66 : 165,681.78 = 69,059.12 : x
  2. Step 2: Convert to fraction form
    120,047.66/165,681.78 = 69,059.12/x
  3. Step 3: Cross multiply
    120,047.66x = 165,681.78 × 69,059.12
  4. Step 4: Simplify right side
    120,047.66x = 11,441,837,926.83
  5. Step 5: Solve for x
    x = 11,441,837,926.83/120,047.66
  6. Step 6: Final answer
    x = 95,310.80

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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.