Home / 194,298.08-291,486.40-81,978.57

Finding the Fourth Proportional to 194,298.08, 291,486.40 and 81,978.57

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Solution

The fourth proportional to 194,298.08, 291,486.40 and 81,978.57 is: 122,984.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,298.08 : 291,486.40 = 81,978.57 : x
  2. Step 2: Convert to fraction form
    194,298.08/291,486.40 = 81,978.57/x
  3. Step 3: Cross multiply
    194,298.08x = 291,486.40 × 81,978.57
  4. Step 4: Simplify right side
    194,298.08x = 23,895,638,246.45
  5. Step 5: Solve for x
    x = 23,895,638,246.45/194,298.08
  6. Step 6: Final answer
    x = 122,984.43

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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.