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Finding the Fourth Proportional to 107,889.92, 161,834.88 and 70,945.28

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Solution

The fourth proportional to 107,889.92, 161,834.88 and 70,945.28 is: 106,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,889.92 : 161,834.88 = 70,945.28 : x
  2. Step 2: Convert to fraction form
    107,889.92/161,834.88 = 70,945.28/x
  3. Step 3: Cross multiply
    107,889.92x = 161,834.88 × 70,945.28
  4. Step 4: Simplify right side
    107,889.92x = 11,481,420,875.37
  5. Step 5: Solve for x
    x = 11,481,420,875.37/107,889.92
  6. Step 6: Final answer
    x = 106,417.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.