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Finding the Fourth Proportional to 105,662.16, 145,813.80 and 63,220.56

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Solution

The fourth proportional to 105,662.16, 145,813.80 and 63,220.56 is: 87,244.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,662.16 : 145,813.80 = 63,220.56 : x
  2. Step 2: Convert to fraction form
    105,662.16/145,813.80 = 63,220.56/x
  3. Step 3: Cross multiply
    105,662.16x = 145,813.80 × 63,220.56
  4. Step 4: Simplify right side
    105,662.16x = 9,218,430,091.73
  5. Step 5: Solve for x
    x = 9,218,430,091.73/105,662.16
  6. Step 6: Final answer
    x = 87,244.38

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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.