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Finding the Fourth Proportional to 101,202.30, 139,664.61 and 55,880.12

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Solution

The fourth proportional to 101,202.30, 139,664.61 and 55,880.12 is: 77,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,202.30 : 139,664.61 = 55,880.12 : x
  2. Step 2: Convert to fraction form
    101,202.30/139,664.61 = 55,880.12/x
  3. Step 3: Cross multiply
    101,202.30x = 139,664.61 × 55,880.12
  4. Step 4: Simplify right side
    101,202.30x = 7,804,474,468.23
  5. Step 5: Solve for x
    x = 7,804,474,468.23/101,202.30
  6. Step 6: Final answer
    x = 77,117.56

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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.