Home / 252,120.78-347,926.70-138,943.53

Finding the Fourth Proportional to 252,120.78, 347,926.70 and 138,943.53

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Solution

The fourth proportional to 252,120.78, 347,926.70 and 138,943.53 is: 191,742.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,120.78 : 347,926.70 = 138,943.53 : x
  2. Step 2: Convert to fraction form
    252,120.78/347,926.70 = 138,943.53/x
  3. Step 3: Cross multiply
    252,120.78x = 347,926.70 × 138,943.53
  4. Step 4: Simplify right side
    252,120.78x = 48,342,163,184.53
  5. Step 5: Solve for x
    x = 48,342,163,184.53/252,120.78
  6. Step 6: Final answer
    x = 191,742.08

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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.