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Finding the Fourth Proportional to 125,640.60, 188,460.90 and 108,533.40

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Solution

The fourth proportional to 125,640.60, 188,460.90 and 108,533.40 is: 162,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640.60 : 188,460.90 = 108,533.40 : x
  2. Step 2: Convert to fraction form
    125,640.60/188,460.90 = 108,533.40/x
  3. Step 3: Cross multiply
    125,640.60x = 188,460.90 × 108,533.40
  4. Step 4: Simplify right side
    125,640.60x = 20,454,302,244.06
  5. Step 5: Solve for x
    x = 20,454,302,244.06/125,640.60
  6. Step 6: Final answer
    x = 162,800.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.