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Finding the Fourth Proportional to 153,996.98, 230,916.54 and 81,990.77

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Solution

The fourth proportional to 153,996.98, 230,916.54 and 81,990.77 is: 122,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,996.98 : 230,916.54 = 81,990.77 : x
  2. Step 2: Convert to fraction form
    153,996.98/230,916.54 = 81,990.77/x
  3. Step 3: Cross multiply
    153,996.98x = 230,916.54 × 81,990.77
  4. Step 4: Simplify right side
    153,996.98x = 18,933,023,765.75
  5. Step 5: Solve for x
    x = 18,933,023,765.75/153,996.98
  6. Step 6: Final answer
    x = 122,944.13

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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.