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Finding the Fourth Proportional to 188,523.72, 260,151.66 and 103,640.76

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Solution

The fourth proportional to 188,523.72, 260,151.66 and 103,640.76 is: 143,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,523.72 : 260,151.66 = 103,640.76 : x
  2. Step 2: Convert to fraction form
    188,523.72/260,151.66 = 103,640.76/x
  3. Step 3: Cross multiply
    188,523.72x = 260,151.66 × 103,640.76
  4. Step 4: Simplify right side
    188,523.72x = 26,962,315,757.66
  5. Step 5: Solve for x
    x = 26,962,315,757.66/188,523.72
  6. Step 6: Final answer
    x = 143,018.16

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1.5x scale

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.