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Finding the Fourth Proportional to 149,319, 206,069.94 and 99,027.72

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Solution

The fourth proportional to 149,319, 206,069.94 and 99,027.72 is: 136,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,319 : 206,069.94 = 99,027.72 : x
  2. Step 2: Convert to fraction form
    149,319/206,069.94 = 99,027.72/x
  3. Step 3: Cross multiply
    149,319x = 206,069.94 × 99,027.72
  4. Step 4: Simplify right side
    149,319x = 20,406,636,318.74
  5. Step 5: Solve for x
    x = 20,406,636,318.74/149,319
  6. Step 6: Final answer
    x = 136,664.70

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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.