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Finding the Fourth Proportional to 123,762.15, 185,643.23 and 108,999.90

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Solution

The fourth proportional to 123,762.15, 185,643.23 and 108,999.90 is: 163,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,762.15 : 185,643.23 = 108,999.90 : x
  2. Step 2: Convert to fraction form
    123,762.15/185,643.23 = 108,999.90/x
  3. Step 3: Cross multiply
    123,762.15x = 185,643.23 × 108,999.90
  4. Step 4: Simplify right side
    123,762.15x = 20,235,092,960.68
  5. Step 5: Solve for x
    x = 20,235,092,960.68/123,762.15
  6. Step 6: Final answer
    x = 163,499.85

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Similar ratio
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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.