Home / 105,981.21-146,078.44-103,176.59

Finding the Fourth Proportional to 105,981.21, 146,078.44 and 103,176.59

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Solution

The fourth proportional to 105,981.21, 146,078.44 and 103,176.59 is: 142,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,981.21 : 146,078.44 = 103,176.59 : x
  2. Step 2: Convert to fraction form
    105,981.21/146,078.44 = 103,176.59/x
  3. Step 3: Cross multiply
    105,981.21x = 146,078.44 × 103,176.59
  4. Step 4: Simplify right side
    105,981.21x = 15,071,874,323.39
  5. Step 5: Solve for x
    x = 15,071,874,323.39/105,981.21
  6. Step 6: Final answer
    x = 142,212.70

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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.