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Finding the Fourth Proportional to 153,705.97, 212,152.27 and 104,728.62

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Solution

The fourth proportional to 153,705.97, 212,152.27 and 104,728.62 is: 144,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,705.97 : 212,152.27 = 104,728.62 : x
  2. Step 2: Convert to fraction form
    153,705.97/212,152.27 = 104,728.62/x
  3. Step 3: Cross multiply
    153,705.97x = 212,152.27 × 104,728.62
  4. Step 4: Simplify right side
    153,705.97x = 22,218,414,466.97
  5. Step 5: Solve for x
    x = 22,218,414,466.97/153,705.97
  6. Step 6: Final answer
    x = 144,551.41

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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.