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Finding the Fourth Proportional to 188,061.81, 259,457.19 and 123,565.78

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Solution

The fourth proportional to 188,061.81, 259,457.19 and 123,565.78 is: 170,476.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,061.81 : 259,457.19 = 123,565.78 : x
  2. Step 2: Convert to fraction form
    188,061.81/259,457.19 = 123,565.78/x
  3. Step 3: Cross multiply
    188,061.81x = 259,457.19 × 123,565.78
  4. Step 4: Simplify right side
    188,061.81x = 32,060,030,901.61
  5. Step 5: Solve for x
    x = 32,060,030,901.61/188,061.81
  6. Step 6: Final answer
    x = 170,476.03

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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.