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Finding the Fourth Proportional to 99,611.22, 137,478.12 and 65,614.26

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Solution

The fourth proportional to 99,611.22, 137,478.12 and 65,614.26 is: 90,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.22 : 137,478.12 = 65,614.26 : x
  2. Step 2: Convert to fraction form
    99,611.22/137,478.12 = 65,614.26/x
  3. Step 3: Cross multiply
    99,611.22x = 137,478.12 × 65,614.26
  4. Step 4: Simplify right side
    99,611.22x = 9,020,525,109.99
  5. Step 5: Solve for x
    x = 9,020,525,109.99/99,611.22
  6. Step 6: Final answer
    x = 90,557.32

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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.