Home / 135,560.64-187,010.40-85,287.36

Finding the Fourth Proportional to 135,560.64, 187,010.40 and 85,287.36

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Solution

The fourth proportional to 135,560.64, 187,010.40 and 85,287.36 is: 117,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,560.64 : 187,010.40 = 85,287.36 : x
  2. Step 2: Convert to fraction form
    135,560.64/187,010.40 = 85,287.36/x
  3. Step 3: Cross multiply
    135,560.64x = 187,010.40 × 85,287.36
  4. Step 4: Simplify right side
    135,560.64x = 15,949,623,308.54
  5. Step 5: Solve for x
    x = 15,949,623,308.54/135,560.64
  6. Step 6: Final answer
    x = 117,656.74

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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.