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Finding the Fourth Proportional to 144,999.40, 217,499.10 and 100,762.60

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Solution

The fourth proportional to 144,999.40, 217,499.10 and 100,762.60 is: 151,143.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,999.40 : 217,499.10 = 100,762.60 : x
  2. Step 2: Convert to fraction form
    144,999.40/217,499.10 = 100,762.60/x
  3. Step 3: Cross multiply
    144,999.40x = 217,499.10 × 100,762.60
  4. Step 4: Simplify right side
    144,999.40x = 21,915,774,813.66
  5. Step 5: Solve for x
    x = 21,915,774,813.66/144,999.40
  6. Step 6: Final answer
    x = 151,143.90

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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.