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Finding the Fourth Proportional to 158,567, 218,829.08 and 86,949.78

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Solution

The fourth proportional to 158,567, 218,829.08 and 86,949.78 is: 119,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,567 : 218,829.08 = 86,949.78 : x
  2. Step 2: Convert to fraction form
    158,567/218,829.08 = 86,949.78/x
  3. Step 3: Cross multiply
    158,567x = 218,829.08 × 86,949.78
  4. Step 4: Simplify right side
    158,567x = 19,027,140,363.60
  5. Step 5: Solve for x
    x = 19,027,140,363.60/158,567
  6. Step 6: Final answer
    x = 119,994.33

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1.5x scale

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.