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Finding the Fourth Proportional to 101,380.60, 139,908.90 and 56,060.56

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Solution

The fourth proportional to 101,380.60, 139,908.90 and 56,060.56 is: 77,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,380.60 : 139,908.90 = 56,060.56 : x
  2. Step 2: Convert to fraction form
    101,380.60/139,908.90 = 56,060.56/x
  3. Step 3: Cross multiply
    101,380.60x = 139,908.90 × 56,060.56
  4. Step 4: Simplify right side
    101,380.60x = 7,843,371,282.98
  5. Step 5: Solve for x
    x = 7,843,371,282.98/101,380.60
  6. Step 6: Final answer
    x = 77,365.60

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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.