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Finding the Fourth Proportional to 152,992.92, 228,997.98 and 81,737.40

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Solution

The fourth proportional to 152,992.92, 228,997.98 and 81,737.40 is: 122,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,992.92 : 228,997.98 = 81,737.40 : x
  2. Step 2: Convert to fraction form
    152,992.92/228,997.98 = 81,737.40/x
  3. Step 3: Cross multiply
    152,992.92x = 228,997.98 × 81,737.40
  4. Step 4: Simplify right side
    152,992.92x = 18,717,699,490.45
  5. Step 5: Solve for x
    x = 18,717,699,490.45/152,992.92
  6. Step 6: Final answer
    x = 122,343.57

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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.