Home / 135,576.51-187,100.45-81,851.10

Finding the Fourth Proportional to 135,576.51, 187,100.45 and 81,851.10

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Solution

The fourth proportional to 135,576.51, 187,100.45 and 81,851.10 is: 112,957.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,576.51 : 187,100.45 = 81,851.10 : x
  2. Step 2: Convert to fraction form
    135,576.51/187,100.45 = 81,851.10/x
  3. Step 3: Cross multiply
    135,576.51x = 187,100.45 × 81,851.10
  4. Step 4: Simplify right side
    135,576.51x = 15,314,377,643.00
  5. Step 5: Solve for x
    x = 15,314,377,643.00/135,576.51
  6. Step 6: Final answer
    x = 112,957.46

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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.