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Finding the Fourth Proportional to 136,902.98, 188,925.73 and 76,473.74

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Solution

The fourth proportional to 136,902.98, 188,925.73 and 76,473.74 is: 105,533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,902.98 : 188,925.73 = 76,473.74 : x
  2. Step 2: Convert to fraction form
    136,902.98/188,925.73 = 76,473.74/x
  3. Step 3: Cross multiply
    136,902.98x = 188,925.73 × 76,473.74
  4. Step 4: Simplify right side
    136,902.98x = 14,447,857,436.46
  5. Step 5: Solve for x
    x = 14,447,857,436.46/136,902.98
  6. Step 6: Final answer
    x = 105,533.55

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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.