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Finding the Fourth Proportional to 107,879.40, 161,732.70 and 45,498.60

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Solution

The fourth proportional to 107,879.40, 161,732.70 and 45,498.60 is: 68,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,879.40 : 161,732.70 = 45,498.60 : x
  2. Step 2: Convert to fraction form
    107,879.40/161,732.70 = 45,498.60/x
  3. Step 3: Cross multiply
    107,879.40x = 161,732.70 × 45,498.60
  4. Step 4: Simplify right side
    107,879.40x = 7,358,611,424.22
  5. Step 5: Solve for x
    x = 7,358,611,424.22/107,879.40
  6. Step 6: Final answer
    x = 68,211.46

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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.