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Finding the Fourth Proportional to 103,490.30, 155,235.45 and 36,932.60

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Solution

The fourth proportional to 103,490.30, 155,235.45 and 36,932.60 is: 55,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,490.30 : 155,235.45 = 36,932.60 : x
  2. Step 2: Convert to fraction form
    103,490.30/155,235.45 = 36,932.60/x
  3. Step 3: Cross multiply
    103,490.30x = 155,235.45 × 36,932.60
  4. Step 4: Simplify right side
    103,490.30x = 5,733,248,780.67
  5. Step 5: Solve for x
    x = 5,733,248,780.67/103,490.30
  6. Step 6: Final answer
    x = 55,398.90

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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.