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Finding the Fourth Proportional to 88,388.16, 122,020.80 and 68,199.68

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Solution

The fourth proportional to 88,388.16, 122,020.80 and 68,199.68 is: 94,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,388.16 : 122,020.80 = 68,199.68 : x
  2. Step 2: Convert to fraction form
    88,388.16/122,020.80 = 68,199.68/x
  3. Step 3: Cross multiply
    88,388.16x = 122,020.80 × 68,199.68
  4. Step 4: Simplify right side
    88,388.16x = 8,321,779,513.34
  5. Step 5: Solve for x
    x = 8,321,779,513.34/88,388.16
  6. Step 6: Final answer
    x = 94,150.39

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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.