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Finding the Fourth Proportional to 105,608.80, 145,726.32 and 63,151.84

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Solution

The fourth proportional to 105,608.80, 145,726.32 and 63,151.84 is: 87,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,608.80 : 145,726.32 = 63,151.84 : x
  2. Step 2: Convert to fraction form
    105,608.80/145,726.32 = 63,151.84/x
  3. Step 3: Cross multiply
    105,608.80x = 145,726.32 × 63,151.84
  4. Step 4: Simplify right side
    105,608.80x = 9,202,885,244.43
  5. Step 5: Solve for x
    x = 9,202,885,244.43/105,608.80
  6. Step 6: Final answer
    x = 87,141.27

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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.