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Finding the Fourth Proportional to 188,888.51, 260,667.86 and 104,008.61

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Solution

The fourth proportional to 188,888.51, 260,667.86 and 104,008.61 is: 143,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,888.51 : 260,667.86 = 104,008.61 : x
  2. Step 2: Convert to fraction form
    188,888.51/260,667.86 = 104,008.61/x
  3. Step 3: Cross multiply
    188,888.51x = 260,667.86 × 104,008.61
  4. Step 4: Simplify right side
    188,888.51x = 27,111,699,966.89
  5. Step 5: Solve for x
    x = 27,111,699,966.89/188,888.51
  6. Step 6: Final answer
    x = 143,532.82

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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.