Home / 199,936.12-299,756.04-121,031.68

Finding the Fourth Proportional to 199,936.12, 299,756.04 and 121,031.68

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Solution

The fourth proportional to 199,936.12, 299,756.04 and 121,031.68 is: 181,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,936.12 : 299,756.04 = 121,031.68 : x
  2. Step 2: Convert to fraction form
    199,936.12/299,756.04 = 121,031.68/x
  3. Step 3: Cross multiply
    199,936.12x = 299,756.04 × 121,031.68
  4. Step 4: Simplify right side
    199,936.12x = 36,279,977,111.35
  5. Step 5: Solve for x
    x = 36,279,977,111.35/199,936.12
  6. Step 6: Final answer
    x = 181,457.84

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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.