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Finding the Fourth Proportional to 119,999.88, 179,999.46 and 66,666.84

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Solution

The fourth proportional to 119,999.88, 179,999.46 and 66,666.84 is: 100,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,999.88 : 179,999.46 = 66,666.84 : x
  2. Step 2: Convert to fraction form
    119,999.88/179,999.46 = 66,666.84/x
  3. Step 3: Cross multiply
    119,999.88x = 179,999.46 × 66,666.84
  4. Step 4: Simplify right side
    119,999.88x = 11,999,995,199.91
  5. Step 5: Solve for x
    x = 11,999,995,199.91/119,999.88
  6. Step 6: Final answer
    x = 100,000.06

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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.