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Finding the Fourth Proportional to 137,737.40, 206,583.42 and 128,771.24

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Solution

The fourth proportional to 137,737.40, 206,583.42 and 128,771.24 is: 193,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,737.40 : 206,583.42 = 128,771.24 : x
  2. Step 2: Convert to fraction form
    137,737.40/206,583.42 = 128,771.24/x
  3. Step 3: Cross multiply
    137,737.40x = 206,583.42 × 128,771.24
  4. Step 4: Simplify right side
    137,737.40x = 26,602,003,156.84
  5. Step 5: Solve for x
    x = 26,602,003,156.84/137,737.40
  6. Step 6: Final answer
    x = 193,135.66

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1.5x scale

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.