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Finding the Fourth Proportional to 101,807.67, 140,500.13 and 66,028.35

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Solution

The fourth proportional to 101,807.67, 140,500.13 and 66,028.35 is: 91,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,807.67 : 140,500.13 = 66,028.35 : x
  2. Step 2: Convert to fraction form
    101,807.67/140,500.13 = 66,028.35/x
  3. Step 3: Cross multiply
    101,807.67x = 140,500.13 × 66,028.35
  4. Step 4: Simplify right side
    101,807.67x = 9,276,991,428.54
  5. Step 5: Solve for x
    x = 9,276,991,428.54/101,807.67
  6. Step 6: Final answer
    x = 91,122.72

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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.