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Finding the Fourth Proportional to 101,611.43, 140,219.43 and 56,291.32

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Solution

The fourth proportional to 101,611.43, 140,219.43 and 56,291.32 is: 77,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,611.43 : 140,219.43 = 56,291.32 : x
  2. Step 2: Convert to fraction form
    101,611.43/140,219.43 = 56,291.32/x
  3. Step 3: Cross multiply
    101,611.43x = 140,219.43 × 56,291.32
  4. Step 4: Simplify right side
    101,611.43x = 7,893,136,804.35
  5. Step 5: Solve for x
    x = 7,893,136,804.35/101,611.43
  6. Step 6: Final answer
    x = 77,679.62

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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.