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Finding the Fourth Proportional to 163,565.03, 225,716.81 and 99,902.84

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Solution

The fourth proportional to 163,565.03, 225,716.81 and 99,902.84 is: 137,864.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,565.03 : 225,716.81 = 99,902.84 : x
  2. Step 2: Convert to fraction form
    163,565.03/225,716.81 = 99,902.84/x
  3. Step 3: Cross multiply
    163,565.03x = 225,716.81 × 99,902.84
  4. Step 4: Simplify right side
    163,565.03x = 22,549,748,726.64
  5. Step 5: Solve for x
    x = 22,549,748,726.64/163,565.03
  6. Step 6: Final answer
    x = 137,864.12

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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.