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Finding the Fourth Proportional to 123,999.10, 185,998.65 and 86,674.30

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Solution

The fourth proportional to 123,999.10, 185,998.65 and 86,674.30 is: 130,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.10 : 185,998.65 = 86,674.30 : x
  2. Step 2: Convert to fraction form
    123,999.10/185,998.65 = 86,674.30/x
  3. Step 3: Cross multiply
    123,999.10x = 185,998.65 × 86,674.30
  4. Step 4: Simplify right side
    123,999.10x = 16,121,302,789.70
  5. Step 5: Solve for x
    x = 16,121,302,789.70/123,999.10
  6. Step 6: Final answer
    x = 130,011.45

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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.