Home / 193,284.72-289,936.80-66,931.20

Finding the Fourth Proportional to 193,284.72, 289,936.80 and 66,931.20

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Solution

The fourth proportional to 193,284.72, 289,936.80 and 66,931.20 is: 100,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,284.72 : 289,936.80 = 66,931.20 : x
  2. Step 2: Convert to fraction form
    193,284.72/289,936.80 = 66,931.20/x
  3. Step 3: Cross multiply
    193,284.72x = 289,936.80 × 66,931.20
  4. Step 4: Simplify right side
    193,284.72x = 19,405,817,948.16
  5. Step 5: Solve for x
    x = 19,405,817,948.16/193,284.72
  6. Step 6: Final answer
    x = 100,400.17

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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.