Home / 136,166.50-187,909.77-76,550.50

Finding the Fourth Proportional to 136,166.50, 187,909.77 and 76,550.50

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Solution

The fourth proportional to 136,166.50, 187,909.77 and 76,550.50 is: 105,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,166.50 : 187,909.77 = 76,550.50 : x
  2. Step 2: Convert to fraction form
    136,166.50/187,909.77 = 76,550.50/x
  3. Step 3: Cross multiply
    136,166.50x = 187,909.77 × 76,550.50
  4. Step 4: Simplify right side
    136,166.50x = 14,384,586,848.39
  5. Step 5: Solve for x
    x = 14,384,586,848.39/136,166.50
  6. Step 6: Final answer
    x = 105,639.69

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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.