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Finding the Fourth Proportional to 88,381.84, 121,804.68 and 82,770.16

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Solution

The fourth proportional to 88,381.84, 121,804.68 and 82,770.16 is: 114,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,381.84 : 121,804.68 = 82,770.16 : x
  2. Step 2: Convert to fraction form
    88,381.84/121,804.68 = 82,770.16/x
  3. Step 3: Cross multiply
    88,381.84x = 121,804.68 × 82,770.16
  4. Step 4: Simplify right side
    88,381.84x = 10,081,792,852.35
  5. Step 5: Solve for x
    x = 10,081,792,852.35/88,381.84
  6. Step 6: Final answer
    x = 114,070.86

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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.