Home / 138,234.70-190,665.61-92,271.17

Finding the Fourth Proportional to 138,234.70, 190,665.61 and 92,271.17

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Solution

The fourth proportional to 138,234.70, 190,665.61 and 92,271.17 is: 127,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,234.70 : 190,665.61 = 92,271.17 : x
  2. Step 2: Convert to fraction form
    138,234.70/190,665.61 = 92,271.17/x
  3. Step 3: Cross multiply
    138,234.70x = 190,665.61 × 92,271.17
  4. Step 4: Simplify right side
    138,234.70x = 17,592,937,960.14
  5. Step 5: Solve for x
    x = 17,592,937,960.14/138,234.70
  6. Step 6: Final answer
    x = 127,268.61

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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.