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Finding the Fourth Proportional to 116,458.34, 160,718.21 and 65,487.12

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Solution

The fourth proportional to 116,458.34, 160,718.21 and 65,487.12 is: 90,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,458.34 : 160,718.21 = 65,487.12 : x
  2. Step 2: Convert to fraction form
    116,458.34/160,718.21 = 65,487.12/x
  3. Step 3: Cross multiply
    116,458.34x = 160,718.21 × 65,487.12
  4. Step 4: Simplify right side
    116,458.34x = 10,524,972,019.90
  5. Step 5: Solve for x
    x = 10,524,972,019.90/116,458.34
  6. Step 6: Final answer
    x = 90,375.43

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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.