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Finding the Fourth Proportional to 118,872, 178,187.88 and 74,529.84

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Solution

The fourth proportional to 118,872, 178,187.88 and 74,529.84 is: 111,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,872 : 178,187.88 = 74,529.84 : x
  2. Step 2: Convert to fraction form
    118,872/178,187.88 = 74,529.84/x
  3. Step 3: Cross multiply
    118,872x = 178,187.88 × 74,529.84
  4. Step 4: Simplify right side
    118,872x = 13,280,314,186.34
  5. Step 5: Solve for x
    x = 13,280,314,186.34/118,872
  6. Step 6: Final answer
    x = 111,719.45

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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.