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Finding the Fourth Proportional to 105,380.90, 158,070.96 and 37,912.78

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Solution

The fourth proportional to 105,380.90, 158,070.96 and 37,912.78 is: 56,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,380.90 : 158,070.96 = 37,912.78 : x
  2. Step 2: Convert to fraction form
    105,380.90/158,070.96 = 37,912.78/x
  3. Step 3: Cross multiply
    105,380.90x = 158,070.96 × 37,912.78
  4. Step 4: Simplify right side
    105,380.90x = 5,992,909,728.46
  5. Step 5: Solve for x
    x = 5,992,909,728.46/105,380.90
  6. Step 6: Final answer
    x = 56,869.03

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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.