Home / 190,830.61-286,377.12-66,171.61

Finding the Fourth Proportional to 190,830.61, 286,377.12 and 66,171.61

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Solution

The fourth proportional to 190,830.61, 286,377.12 and 66,171.61 is: 99,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,830.61 : 286,377.12 = 66,171.61 : x
  2. Step 2: Convert to fraction form
    190,830.61/286,377.12 = 66,171.61/x
  3. Step 3: Cross multiply
    190,830.61x = 286,377.12 × 66,171.61
  4. Step 4: Simplify right side
    190,830.61x = 18,950,034,381.62
  5. Step 5: Solve for x
    x = 18,950,034,381.62/190,830.61
  6. Step 6: Final answer
    x = 99,302.91

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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.