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Finding the Fourth Proportional to 136,068.85, 187,774 and 75,645.01

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Solution

The fourth proportional to 136,068.85, 187,774 and 75,645.01 is: 104,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,068.85 : 187,774 = 75,645.01 : x
  2. Step 2: Convert to fraction form
    136,068.85/187,774 = 75,645.01/x
  3. Step 3: Cross multiply
    136,068.85x = 187,774 × 75,645.01
  4. Step 4: Simplify right side
    136,068.85x = 14,204,166,107.74
  5. Step 5: Solve for x
    x = 14,204,166,107.74/136,068.85
  6. Step 6: Final answer
    x = 104,389.55

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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.