Home / 251,534.04-347,109.72-138,356.78

Finding the Fourth Proportional to 251,534.04, 347,109.72 and 138,356.78

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Solution

The fourth proportional to 251,534.04, 347,109.72 and 138,356.78 is: 190,928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,534.04 : 347,109.72 = 138,356.78 : x
  2. Step 2: Convert to fraction form
    251,534.04/347,109.72 = 138,356.78/x
  3. Step 3: Cross multiply
    251,534.04x = 347,109.72 × 138,356.78
  4. Step 4: Simplify right side
    251,534.04x = 48,024,983,165.90
  5. Step 5: Solve for x
    x = 48,024,983,165.90/251,534.04
  6. Step 6: Final answer
    x = 190,928.37

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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.