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Finding the Fourth Proportional to 116,378.62, 160,616.19 and 65,391.46

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Solution

The fourth proportional to 116,378.62, 160,616.19 and 65,391.46 is: 90,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,378.62 : 160,616.19 = 65,391.46 : x
  2. Step 2: Convert to fraction form
    116,378.62/160,616.19 = 65,391.46/x
  3. Step 3: Cross multiply
    116,378.62x = 160,616.19 × 65,391.46
  4. Step 4: Simplify right side
    116,378.62x = 10,502,927,163.74
  5. Step 5: Solve for x
    x = 10,502,927,163.74/116,378.62
  6. Step 6: Final answer
    x = 90,247.91

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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.