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Finding the Fourth Proportional to 125,362.77, 172,809.69 and 106,171.85

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Solution

The fourth proportional to 125,362.77, 172,809.69 and 106,171.85 is: 146,355.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,362.77 : 172,809.69 = 106,171.85 : x
  2. Step 2: Convert to fraction form
    125,362.77/172,809.69 = 106,171.85/x
  3. Step 3: Cross multiply
    125,362.77x = 172,809.69 × 106,171.85
  4. Step 4: Simplify right side
    125,362.77x = 18,347,523,621.18
  5. Step 5: Solve for x
    x = 18,347,523,621.18/125,362.77
  6. Step 6: Final answer
    x = 146,355.44

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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.