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Finding the Fourth Proportional to 158,567.78, 218,830.14 and 86,950.52

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Solution

The fourth proportional to 158,567.78, 218,830.14 and 86,950.52 is: 119,995.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,567.78 : 218,830.14 = 86,950.52 : x
  2. Step 2: Convert to fraction form
    158,567.78/218,830.14 = 86,950.52/x
  3. Step 3: Cross multiply
    158,567.78x = 218,830.14 × 86,950.52
  4. Step 4: Simplify right side
    158,567.78x = 19,027,394,464.67
  5. Step 5: Solve for x
    x = 19,027,394,464.67/158,567.78
  6. Step 6: Final answer
    x = 119,995.34

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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.