Home / 136,823.78-188,815.01-76,395.44

Finding the Fourth Proportional to 136,823.78, 188,815.01 and 76,395.44

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Solution

The fourth proportional to 136,823.78, 188,815.01 and 76,395.44 is: 105,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,823.78 : 188,815.01 = 76,395.44 : x
  2. Step 2: Convert to fraction form
    136,823.78/188,815.01 = 76,395.44/x
  3. Step 3: Cross multiply
    136,823.78x = 188,815.01 × 76,395.44
  4. Step 4: Simplify right side
    136,823.78x = 14,424,605,857.61
  5. Step 5: Solve for x
    x = 14,424,605,857.61/136,823.78
  6. Step 6: Final answer
    x = 105,424.70

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1.5x scale

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.