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Finding the Fourth Proportional to 101,011.25, 139,399.85 and 56,299.25

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Solution

The fourth proportional to 101,011.25, 139,399.85 and 56,299.25 is: 77,695.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.25 : 139,399.85 = 56,299.25 : x
  2. Step 2: Convert to fraction form
    101,011.25/139,399.85 = 56,299.25/x
  3. Step 3: Cross multiply
    101,011.25x = 139,399.85 × 56,299.25
  4. Step 4: Simplify right side
    101,011.25x = 7,848,106,723.62
  5. Step 5: Solve for x
    x = 7,848,106,723.62/101,011.25
  6. Step 6: Final answer
    x = 77,695.37

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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.