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Finding the Fourth Proportional to 135,287.40, 202,959.90 and 41,802.60

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Solution

The fourth proportional to 135,287.40, 202,959.90 and 41,802.60 is: 62,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,287.40 : 202,959.90 = 41,802.60 : x
  2. Step 2: Convert to fraction form
    135,287.40/202,959.90 = 41,802.60/x
  3. Step 3: Cross multiply
    135,287.40x = 202,959.90 × 41,802.60
  4. Step 4: Simplify right side
    135,287.40x = 8,484,251,515.74
  5. Step 5: Solve for x
    x = 8,484,251,515.74/135,287.40
  6. Step 6: Final answer
    x = 62,712.80

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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.