Home / 103,210.39-154,815.45-68,141.71

Finding the Fourth Proportional to 103,210.39, 154,815.45 and 68,141.71

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Solution

The fourth proportional to 103,210.39, 154,815.45 and 68,141.71 is: 102,212.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,210.39 : 154,815.45 = 68,141.71 : x
  2. Step 2: Convert to fraction form
    103,210.39/154,815.45 = 68,141.71/x
  3. Step 3: Cross multiply
    103,210.39x = 154,815.45 × 68,141.71
  4. Step 4: Simplify right side
    103,210.39x = 10,549,389,497.42
  5. Step 5: Solve for x
    x = 10,549,389,497.42/103,210.39
  6. Step 6: Final answer
    x = 102,212.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.