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Finding the Fourth Proportional to 125,600.40, 188,400.60 and 111,603.60

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Solution

The fourth proportional to 125,600.40, 188,400.60 and 111,603.60 is: 167,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,600.40 : 188,400.60 = 111,603.60 : x
  2. Step 2: Convert to fraction form
    125,600.40/188,400.60 = 111,603.60/x
  3. Step 3: Cross multiply
    125,600.40x = 188,400.60 × 111,603.60
  4. Step 4: Simplify right side
    125,600.40x = 21,026,185,202.16
  5. Step 5: Solve for x
    x = 21,026,185,202.16/125,600.40
  6. Step 6: Final answer
    x = 167,405.40

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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.