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Finding the Fourth Proportional to 116,386, 160,600.75 and 65,390.62

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Solution

The fourth proportional to 116,386, 160,600.75 and 65,390.62 is: 90,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,386 : 160,600.75 = 65,390.62 : x
  2. Step 2: Convert to fraction form
    116,386/160,600.75 = 65,390.62/x
  3. Step 3: Cross multiply
    116,386x = 160,600.75 × 65,390.62
  4. Step 4: Simplify right side
    116,386x = 10,501,782,614.97
  5. Step 5: Solve for x
    x = 10,501,782,614.97/116,386
  6. Step 6: Final answer
    x = 90,232.35

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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.