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Finding the Fourth Proportional to 137,901.87, 190,304.60 and 77,472.51

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Solution

The fourth proportional to 137,901.87, 190,304.60 and 77,472.51 is: 106,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,901.87 : 190,304.60 = 77,472.51 : x
  2. Step 2: Convert to fraction form
    137,901.87/190,304.60 = 77,472.51/x
  3. Step 3: Cross multiply
    137,901.87x = 190,304.60 × 77,472.51
  4. Step 4: Simplify right side
    137,901.87x = 14,743,374,639.18
  5. Step 5: Solve for x
    x = 14,743,374,639.18/137,901.87
  6. Step 6: Final answer
    x = 106,912.07

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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.