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Finding the Fourth Proportional to 158,187.94, 218,072.32 and 112,787.17

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Solution

The fourth proportional to 158,187.94, 218,072.32 and 112,787.17 is: 155,484.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,187.94 : 218,072.32 = 112,787.17 : x
  2. Step 2: Convert to fraction form
    158,187.94/218,072.32 = 112,787.17/x
  3. Step 3: Cross multiply
    158,187.94x = 218,072.32 × 112,787.17
  4. Step 4: Simplify right side
    158,187.94x = 24,595,759,828.13
  5. Step 5: Solve for x
    x = 24,595,759,828.13/158,187.94
  6. Step 6: Final answer
    x = 155,484.42

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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.