Home / 136,718.51-188,671.19-76,288.50

Finding the Fourth Proportional to 136,718.51, 188,671.19 and 76,288.50

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Solution

The fourth proportional to 136,718.51, 188,671.19 and 76,288.50 is: 105,277.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,718.51 : 188,671.19 = 76,288.50 : x
  2. Step 2: Convert to fraction form
    136,718.51/188,671.19 = 76,288.50/x
  3. Step 3: Cross multiply
    136,718.51x = 188,671.19 × 76,288.50
  4. Step 4: Simplify right side
    136,718.51x = 14,393,441,696.87
  5. Step 5: Solve for x
    x = 14,393,441,696.87/136,718.51
  6. Step 6: Final answer
    x = 105,277.93

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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.