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Finding the Fourth Proportional to 137,364.80, 205,948.80 and 53,052.80

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Solution

The fourth proportional to 137,364.80, 205,948.80 and 53,052.80 is: 79,541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,364.80 : 205,948.80 = 53,052.80 : x
  2. Step 2: Convert to fraction form
    137,364.80/205,948.80 = 53,052.80/x
  3. Step 3: Cross multiply
    137,364.80x = 205,948.80 × 53,052.80
  4. Step 4: Simplify right side
    137,364.80x = 10,926,160,496.64
  5. Step 5: Solve for x
    x = 10,926,160,496.64/137,364.80
  6. Step 6: Final answer
    x = 79,541.20

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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.