Home / 100,623.90-139,002.72-95,309.49

Finding the Fourth Proportional to 100,623.90, 139,002.72 and 95,309.49

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Solution

The fourth proportional to 100,623.90, 139,002.72 and 95,309.49 is: 131,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,623.90 : 139,002.72 = 95,309.49 : x
  2. Step 2: Convert to fraction form
    100,623.90/139,002.72 = 95,309.49/x
  3. Step 3: Cross multiply
    100,623.90x = 139,002.72 × 95,309.49
  4. Step 4: Simplify right side
    100,623.90x = 13,248,278,351.81
  5. Step 5: Solve for x
    x = 13,248,278,351.81/100,623.90
  6. Step 6: Final answer
    x = 131,661.35

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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.