Home / 105,552.97-145,663.32-57,155.43

Finding the Fourth Proportional to 105,552.97, 145,663.32 and 57,155.43

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Solution

The fourth proportional to 105,552.97, 145,663.32 and 57,155.43 is: 78,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,552.97 : 145,663.32 = 57,155.43 : x
  2. Step 2: Convert to fraction form
    105,552.97/145,663.32 = 57,155.43/x
  3. Step 3: Cross multiply
    105,552.97x = 145,663.32 × 57,155.43
  4. Step 4: Simplify right side
    105,552.97x = 8,325,449,689.83
  5. Step 5: Solve for x
    x = 8,325,449,689.83/105,552.97
  6. Step 6: Final answer
    x = 78,874.61

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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.