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Finding the Fourth Proportional to 143,611.92, 198,192.30 and 79,948.32

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Solution

The fourth proportional to 143,611.92, 198,192.30 and 79,948.32 is: 110,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,611.92 : 198,192.30 = 79,948.32 : x
  2. Step 2: Convert to fraction form
    143,611.92/198,192.30 = 79,948.32/x
  3. Step 3: Cross multiply
    143,611.92x = 198,192.30 × 79,948.32
  4. Step 4: Simplify right side
    143,611.92x = 15,845,141,421.94
  5. Step 5: Solve for x
    x = 15,845,141,421.94/143,611.92
  6. Step 6: Final answer
    x = 110,333.05

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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.