Home / 138,214.95-190,734.51-76,960.72

Finding the Fourth Proportional to 138,214.95, 190,734.51 and 76,960.72

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Solution

The fourth proportional to 138,214.95, 190,734.51 and 76,960.72 is: 106,204.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,214.95 : 190,734.51 = 76,960.72 : x
  2. Step 2: Convert to fraction form
    138,214.95/190,734.51 = 76,960.72/x
  3. Step 3: Cross multiply
    138,214.95x = 190,734.51 × 76,960.72
  4. Step 4: Simplify right side
    138,214.95x = 14,679,065,218.45
  5. Step 5: Solve for x
    x = 14,679,065,218.45/138,214.95
  6. Step 6: Final answer
    x = 106,204.61

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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.