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Finding the Fourth Proportional to 188,502.47, 260,126.82 and 103,618.92

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Solution

The fourth proportional to 188,502.47, 260,126.82 and 103,618.92 is: 142,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.47 : 260,126.82 = 103,618.92 : x
  2. Step 2: Convert to fraction form
    188,502.47/260,126.82 = 103,618.92/x
  3. Step 3: Cross multiply
    188,502.47x = 260,126.82 × 103,618.92
  4. Step 4: Simplify right side
    188,502.47x = 26,954,060,151.43
  5. Step 5: Solve for x
    x = 26,954,060,151.43/188,502.47
  6. Step 6: Final answer
    x = 142,990.49

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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.