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Finding the Fourth Proportional to 114,957.12, 158,639.28 and 64,656

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Solution

The fourth proportional to 114,957.12, 158,639.28 and 64,656 is: 89,224.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,957.12 : 158,639.28 = 64,656 : x
  2. Step 2: Convert to fraction form
    114,957.12/158,639.28 = 64,656/x
  3. Step 3: Cross multiply
    114,957.12x = 158,639.28 × 64,656
  4. Step 4: Simplify right side
    114,957.12x = 10,256,981,287.68
  5. Step 5: Solve for x
    x = 10,256,981,287.68/114,957.12
  6. Step 6: Final answer
    x = 89,224.41

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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.