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Finding the Fourth Proportional to 89,955.66, 134,723.58 and 71,109.18

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Solution

The fourth proportional to 89,955.66, 134,723.58 and 71,109.18 is: 106,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,955.66 : 134,723.58 = 71,109.18 : x
  2. Step 2: Convert to fraction form
    89,955.66/134,723.58 = 71,109.18/x
  3. Step 3: Cross multiply
    89,955.66x = 134,723.58 × 71,109.18
  4. Step 4: Simplify right side
    89,955.66x = 9,580,083,300.46
  5. Step 5: Solve for x
    x = 9,580,083,300.46/89,955.66
  6. Step 6: Final answer
    x = 106,497.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.