Home / 135,959.04-187,686.18-81,537.12

Finding the Fourth Proportional to 135,959.04, 187,686.18 and 81,537.12

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Solution

The fourth proportional to 135,959.04, 187,686.18 and 81,537.12 is: 112,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,959.04 : 187,686.18 = 81,537.12 : x
  2. Step 2: Convert to fraction form
    135,959.04/187,686.18 = 81,537.12/x
  3. Step 3: Cross multiply
    135,959.04x = 187,686.18 × 81,537.12
  4. Step 4: Simplify right side
    135,959.04x = 15,303,390,581.00
  5. Step 5: Solve for x
    x = 15,303,390,581.00/135,959.04
  6. Step 6: Final answer
    x = 112,558.83

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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.