Home / 199,985.82-299,994.18-66,866.64

Finding the Fourth Proportional to 199,985.82, 299,994.18 and 66,866.64

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Solution

The fourth proportional to 199,985.82, 299,994.18 and 66,866.64 is: 100,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,985.82 : 299,994.18 = 66,866.64 : x
  2. Step 2: Convert to fraction form
    199,985.82/299,994.18 = 66,866.64/x
  3. Step 3: Cross multiply
    199,985.82x = 299,994.18 × 66,866.64
  4. Step 4: Simplify right side
    199,985.82x = 20,059,602,836.16
  5. Step 5: Solve for x
    x = 20,059,602,836.16/199,985.82
  6. Step 6: Final answer
    x = 100,305.13

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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.