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Finding the Fourth Proportional to 158,527.67, 218,766.33 and 86,907.69

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Solution

The fourth proportional to 158,527.67, 218,766.33 and 86,907.69 is: 119,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,527.67 : 218,766.33 = 86,907.69 : x
  2. Step 2: Convert to fraction form
    158,527.67/218,766.33 = 86,907.69/x
  3. Step 3: Cross multiply
    158,527.67x = 218,766.33 × 86,907.69
  4. Step 4: Simplify right side
    158,527.67x = 19,012,476,390.08
  5. Step 5: Solve for x
    x = 19,012,476,390.08/158,527.67
  6. Step 6: Final answer
    x = 119,931.60

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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.