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Finding the Fourth Proportional to 255,129.20, 352,079.88 and 141,959.12

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Solution

The fourth proportional to 255,129.20, 352,079.88 and 141,959.12 is: 195,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,129.20 : 352,079.88 = 141,959.12 : x
  2. Step 2: Convert to fraction form
    255,129.20/352,079.88 = 141,959.12/x
  3. Step 3: Cross multiply
    255,129.20x = 352,079.88 × 141,959.12
  4. Step 4: Simplify right side
    255,129.20x = 49,980,949,934.51
  5. Step 5: Solve for x
    x = 49,980,949,934.51/255,129.20
  6. Step 6: Final answer
    x = 195,904.47

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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.