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Finding the Fourth Proportional to 101,099.80, 151,649.70 and 81,416.80

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Solution

The fourth proportional to 101,099.80, 151,649.70 and 81,416.80 is: 122,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,099.80 : 151,649.70 = 81,416.80 : x
  2. Step 2: Convert to fraction form
    101,099.80/151,649.70 = 81,416.80/x
  3. Step 3: Cross multiply
    101,099.80x = 151,649.70 × 81,416.80
  4. Step 4: Simplify right side
    101,099.80x = 12,346,833,294.96
  5. Step 5: Solve for x
    x = 12,346,833,294.96/101,099.80
  6. Step 6: Final answer
    x = 122,125.20

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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.