Home / 105,664.73-145,832.27-65,391.47

Finding the Fourth Proportional to 105,664.73, 145,832.27 and 65,391.47

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Solution

The fourth proportional to 105,664.73, 145,832.27 and 65,391.47 is: 90,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,664.73 : 145,832.27 = 65,391.47 : x
  2. Step 2: Convert to fraction form
    105,664.73/145,832.27 = 65,391.47/x
  3. Step 3: Cross multiply
    105,664.73x = 145,832.27 × 65,391.47
  4. Step 4: Simplify right side
    105,664.73x = 9,536,186,508.74
  5. Step 5: Solve for x
    x = 9,536,186,508.74/105,664.73
  6. Step 6: Final answer
    x = 90,249.48

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1.5x scale

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.