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Finding the Fourth Proportional to 101,172.56, 139,624.20 and 56,463.44

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Solution

The fourth proportional to 101,172.56, 139,624.20 and 56,463.44 is: 77,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,172.56 : 139,624.20 = 56,463.44 : x
  2. Step 2: Convert to fraction form
    101,172.56/139,624.20 = 56,463.44/x
  3. Step 3: Cross multiply
    101,172.56x = 139,624.20 × 56,463.44
  4. Step 4: Simplify right side
    101,172.56x = 7,883,662,639.25
  5. Step 5: Solve for x
    x = 7,883,662,639.25/101,172.56
  6. Step 6: Final answer
    x = 77,922.93

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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.