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Finding the Fourth Proportional to 101,660.92, 140,292.66 and 56,340.16

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Solution

The fourth proportional to 101,660.92, 140,292.66 and 56,340.16 is: 77,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,660.92 : 140,292.66 = 56,340.16 : x
  2. Step 2: Convert to fraction form
    101,660.92/140,292.66 = 56,340.16/x
  3. Step 3: Cross multiply
    101,660.92x = 140,292.66 × 56,340.16
  4. Step 4: Simplify right side
    101,660.92x = 7,904,110,911.23
  5. Step 5: Solve for x
    x = 7,904,110,911.23/101,660.92
  6. Step 6: Final answer
    x = 77,749.75

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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.