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Finding the Fourth Proportional to 188,600.05, 260,262.88 and 103,717.12

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Solution

The fourth proportional to 188,600.05, 260,262.88 and 103,717.12 is: 143,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,600.05 : 260,262.88 = 103,717.12 : x
  2. Step 2: Convert to fraction form
    188,600.05/260,262.88 = 103,717.12/x
  3. Step 3: Cross multiply
    188,600.05x = 260,262.88 × 103,717.12
  4. Step 4: Simplify right side
    188,600.05x = 26,993,715,931.82
  5. Step 5: Solve for x
    x = 26,993,715,931.82/188,600.05
  6. Step 6: Final answer
    x = 143,126.77

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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.