Home / 185,764.50-256,356-105,207.72

Finding the Fourth Proportional to 185,764.50, 256,356 and 105,207.72

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Solution

The fourth proportional to 185,764.50, 256,356 and 105,207.72 is: 145,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,764.50 : 256,356 = 105,207.72 : x
  2. Step 2: Convert to fraction form
    185,764.50/256,356 = 105,207.72/x
  3. Step 3: Cross multiply
    185,764.50x = 256,356 × 105,207.72
  4. Step 4: Simplify right side
    185,764.50x = 26,970,630,268.32
  5. Step 5: Solve for x
    x = 26,970,630,268.32/185,764.50
  6. Step 6: Final answer
    x = 145,187.21

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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.