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Finding the Fourth Proportional to 101,658.92, 140,285.26 and 56,338.84

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Solution

The fourth proportional to 101,658.92, 140,285.26 and 56,338.84 is: 77,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,658.92 : 140,285.26 = 56,338.84 : x
  2. Step 2: Convert to fraction form
    101,658.92/140,285.26 = 56,338.84/x
  3. Step 3: Cross multiply
    101,658.92x = 140,285.26 × 56,338.84
  4. Step 4: Simplify right side
    101,658.92x = 7,903,508,817.50
  5. Step 5: Solve for x
    x = 7,903,508,817.50/101,658.92
  6. Step 6: Final answer
    x = 77,745.35

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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.