Home / 136,681.78-188,620.94-76,252.42

Finding the Fourth Proportional to 136,681.78, 188,620.94 and 76,252.42

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Solution

The fourth proportional to 136,681.78, 188,620.94 and 76,252.42 is: 105,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,681.78 : 188,620.94 = 76,252.42 : x
  2. Step 2: Convert to fraction form
    136,681.78/188,620.94 = 76,252.42/x
  3. Step 3: Cross multiply
    136,681.78x = 188,620.94 × 76,252.42
  4. Step 4: Simplify right side
    136,681.78x = 14,382,803,137.67
  5. Step 5: Solve for x
    x = 14,382,803,137.67/136,681.78
  6. Step 6: Final answer
    x = 105,228.39

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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.