Home / 251,941.81-347,679.71-138,764.56

Finding the Fourth Proportional to 251,941.81, 347,679.71 and 138,764.56

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Solution

The fourth proportional to 251,941.81, 347,679.71 and 138,764.56 is: 191,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,941.81 : 347,679.71 = 138,764.56 : x
  2. Step 2: Convert to fraction form
    251,941.81/347,679.71 = 138,764.56/x
  3. Step 3: Cross multiply
    251,941.81x = 347,679.71 × 138,764.56
  4. Step 4: Simplify right side
    251,941.81x = 48,245,621,979.08
  5. Step 5: Solve for x
    x = 48,245,621,979.08/251,941.81
  6. Step 6: Final answer
    x = 191,495.10

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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.