Home / 85,398.12-117,853.38-74,769.48

Finding the Fourth Proportional to 85,398.12, 117,853.38 and 74,769.48

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Solution

The fourth proportional to 85,398.12, 117,853.38 and 74,769.48 is: 103,185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.12 : 117,853.38 = 74,769.48 : x
  2. Step 2: Convert to fraction form
    85,398.12/117,853.38 = 74,769.48/x
  3. Step 3: Cross multiply
    85,398.12x = 117,853.38 × 74,769.48
  4. Step 4: Simplify right side
    85,398.12x = 8,811,835,938.84
  5. Step 5: Solve for x
    x = 8,811,835,938.84/85,398.12
  6. Step 6: Final answer
    x = 103,185.36

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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.