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Finding the Fourth Proportional to 170,945.60, 256,341.60 and 65,729.60

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Solution

The fourth proportional to 170,945.60, 256,341.60 and 65,729.60 is: 98,564.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,945.60 : 256,341.60 = 65,729.60 : x
  2. Step 2: Convert to fraction form
    170,945.60/256,341.60 = 65,729.60/x
  3. Step 3: Cross multiply
    170,945.60x = 256,341.60 × 65,729.60
  4. Step 4: Simplify right side
    170,945.60x = 16,849,230,831.36
  5. Step 5: Solve for x
    x = 16,849,230,831.36/170,945.60
  6. Step 6: Final answer
    x = 98,564.87

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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.