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Finding the Fourth Proportional to 128,393.17, 192,656.91 and 52,548.01

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Solution

The fourth proportional to 128,393.17, 192,656.91 and 52,548.01 is: 78,849.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,393.17 : 192,656.91 = 52,548.01 : x
  2. Step 2: Convert to fraction form
    128,393.17/192,656.91 = 52,548.01/x
  3. Step 3: Cross multiply
    128,393.17x = 192,656.91 × 52,548.01
  4. Step 4: Simplify right side
    128,393.17x = 10,123,737,233.25
  5. Step 5: Solve for x
    x = 10,123,737,233.25/128,393.17
  6. Step 6: Final answer
    x = 78,849.50

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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.