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Finding the Fourth Proportional to 100,047.74, 138,108.39 and 62,340.62

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Solution

The fourth proportional to 100,047.74, 138,108.39 and 62,340.62 is: 86,056.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,047.74 : 138,108.39 = 62,340.62 : x
  2. Step 2: Convert to fraction form
    100,047.74/138,108.39 = 62,340.62/x
  3. Step 3: Cross multiply
    100,047.74x = 138,108.39 × 62,340.62
  4. Step 4: Simplify right side
    100,047.74x = 8,609,762,659.80
  5. Step 5: Solve for x
    x = 8,609,762,659.80/100,047.74
  6. Step 6: Final answer
    x = 86,056.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.