Home / 140,262,097.72-193,561,957.12-78,382,436.36

Finding the Fourth Proportional to 140,262,097.72, 193,561,957.12 and 78,382,436.36

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Solution

The fourth proportional to 140,262,097.72, 193,561,957.12 and 78,382,436.36 is: 108,167,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,262,097.72 : 193,561,957.12 = 78,382,436.36 : x
  2. Step 2: Convert to fraction form
    140,262,097.72/193,561,957.12 = 78,382,436.36/x
  3. Step 3: Cross multiply
    140,262,097.72x = 193,561,957.12 × 78,382,436.36
  4. Step 4: Simplify right side
    140,262,097.72x = 15,171,857,785,675,450
  5. Step 5: Solve for x
    x = 15,171,857,785,675,450/140,262,097.72
  6. Step 6: Final answer
    x = 108,167,908.74

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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.