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Finding the Fourth Proportional to 123,879.24, 185,818.86 and 53,757

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Solution

The fourth proportional to 123,879.24, 185,818.86 and 53,757 is: 80,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,879.24 : 185,818.86 = 53,757 : x
  2. Step 2: Convert to fraction form
    123,879.24/185,818.86 = 53,757/x
  3. Step 3: Cross multiply
    123,879.24x = 185,818.86 × 53,757
  4. Step 4: Simplify right side
    123,879.24x = 9,989,064,457.02
  5. Step 5: Solve for x
    x = 9,989,064,457.02/123,879.24
  6. Step 6: Final answer
    x = 80,635.50

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1.5x scale

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.