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Finding the Fourth Proportional to 125,555.14, 188,332.71 and 78,840.82

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Solution

The fourth proportional to 125,555.14, 188,332.71 and 78,840.82 is: 118,261.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,555.14 : 188,332.71 = 78,840.82 : x
  2. Step 2: Convert to fraction form
    125,555.14/188,332.71 = 78,840.82/x
  3. Step 3: Cross multiply
    125,555.14x = 188,332.71 × 78,840.82
  4. Step 4: Simplify right side
    125,555.14x = 14,848,305,289.22
  5. Step 5: Solve for x
    x = 14,848,305,289.22/125,555.14
  6. Step 6: Final answer
    x = 118,261.23

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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.