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Finding the Fourth Proportional to 137,870.88, 206,677.04 and 53,685.06

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Solution

The fourth proportional to 137,870.88, 206,677.04 and 53,685.06 is: 80,477.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,870.88 : 206,677.04 = 53,685.06 : x
  2. Step 2: Convert to fraction form
    137,870.88/206,677.04 = 53,685.06/x
  3. Step 3: Cross multiply
    137,870.88x = 206,677.04 × 53,685.06
  4. Step 4: Simplify right side
    137,870.88x = 11,095,469,024.60
  5. Step 5: Solve for x
    x = 11,095,469,024.60/137,870.88
  6. Step 6: Final answer
    x = 80,477.25

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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.