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Finding the Fourth Proportional to 106,508.58, 158,890.64 and 103,612.86

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Solution

The fourth proportional to 106,508.58, 158,890.64 and 103,612.86 is: 154,570.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,508.58 : 158,890.64 = 103,612.86 : x
  2. Step 2: Convert to fraction form
    106,508.58/158,890.64 = 103,612.86/x
  3. Step 3: Cross multiply
    106,508.58x = 158,890.64 × 103,612.86
  4. Step 4: Simplify right side
    106,508.58x = 16,463,113,119.57
  5. Step 5: Solve for x
    x = 16,463,113,119.57/106,508.58
  6. Step 6: Final answer
    x = 154,570.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.