Home / 119,905.12-165,469.29-66,190.20

Finding the Fourth Proportional to 119,905.12, 165,469.29 and 66,190.20

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Solution

The fourth proportional to 119,905.12, 165,469.29 and 66,190.20 is: 91,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,905.12 : 165,469.29 = 66,190.20 : x
  2. Step 2: Convert to fraction form
    119,905.12/165,469.29 = 66,190.20/x
  3. Step 3: Cross multiply
    119,905.12x = 165,469.29 × 66,190.20
  4. Step 4: Simplify right side
    119,905.12x = 10,952,445,693.71
  5. Step 5: Solve for x
    x = 10,952,445,693.71/119,905.12
  6. Step 6: Final answer
    x = 91,342.60

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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.