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Finding the Fourth Proportional to 105,878.97, 146,117.75 and 63,436.59

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Solution

The fourth proportional to 105,878.97, 146,117.75 and 63,436.59 is: 87,545.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,878.97 : 146,117.75 = 63,436.59 : x
  2. Step 2: Convert to fraction form
    105,878.97/146,117.75 = 63,436.59/x
  3. Step 3: Cross multiply
    105,878.97x = 146,117.75 × 63,436.59
  4. Step 4: Simplify right side
    105,878.97x = 9,269,211,481.29
  5. Step 5: Solve for x
    x = 9,269,211,481.29/105,878.97
  6. Step 6: Final answer
    x = 87,545.35

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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.