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Finding the Fourth Proportional to 202,018.72, 278,774.76 and 111,374.68

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Solution

The fourth proportional to 202,018.72, 278,774.76 and 111,374.68 is: 153,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,018.72 : 278,774.76 = 111,374.68 : x
  2. Step 2: Convert to fraction form
    202,018.72/278,774.76 = 111,374.68/x
  3. Step 3: Cross multiply
    202,018.72x = 278,774.76 × 111,374.68
  4. Step 4: Simplify right side
    202,018.72x = 31,048,449,687.08
  5. Step 5: Solve for x
    x = 31,048,449,687.08/202,018.72
  6. Step 6: Final answer
    x = 153,690.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.