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Finding the Fourth Proportional to 188,434.64, 260,055.24 and 112,981.52

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Solution

The fourth proportional to 188,434.64, 260,055.24 and 112,981.52 is: 155,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,434.64 : 260,055.24 = 112,981.52 : x
  2. Step 2: Convert to fraction form
    188,434.64/260,055.24 = 112,981.52/x
  3. Step 3: Cross multiply
    188,434.64x = 260,055.24 × 112,981.52
  4. Step 4: Simplify right side
    188,434.64x = 29,381,436,299.16
  5. Step 5: Solve for x
    x = 29,381,436,299.16/188,434.64
  6. Step 6: Final answer
    x = 155,923.75

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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.