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Finding the Fourth Proportional to 158,176.95, 218,284.15 and 86,556.95

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Solution

The fourth proportional to 158,176.95, 218,284.15 and 86,556.95 is: 119,448.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,176.95 : 218,284.15 = 86,556.95 : x
  2. Step 2: Convert to fraction form
    158,176.95/218,284.15 = 86,556.95/x
  3. Step 3: Cross multiply
    158,176.95x = 218,284.15 × 86,556.95
  4. Step 4: Simplify right side
    158,176.95x = 18,894,010,257.34
  5. Step 5: Solve for x
    x = 18,894,010,257.34/158,176.95
  6. Step 6: Final answer
    x = 119,448.57

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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.