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Finding the Fourth Proportional to 136,630, 188,550.88 and 77,014

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Solution

The fourth proportional to 136,630, 188,550.88 and 77,014 is: 106,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,630 : 188,550.88 = 77,014 : x
  2. Step 2: Convert to fraction form
    136,630/188,550.88 = 77,014/x
  3. Step 3: Cross multiply
    136,630x = 188,550.88 × 77,014
  4. Step 4: Simplify right side
    136,630x = 14,521,057,472.32
  5. Step 5: Solve for x
    x = 14,521,057,472.32/136,630
  6. Step 6: Final answer
    x = 106,280.15

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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.