Home / 103,904-143,464.38-63,672.74

Finding the Fourth Proportional to 103,904, 143,464.38 and 63,672.74

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Solution

The fourth proportional to 103,904, 143,464.38 and 63,672.74 is: 87,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,904 : 143,464.38 = 63,672.74 : x
  2. Step 2: Convert to fraction form
    103,904/143,464.38 = 63,672.74/x
  3. Step 3: Cross multiply
    103,904x = 143,464.38 × 63,672.74
  4. Step 4: Simplify right side
    103,904x = 9,134,770,167.00
  5. Step 5: Solve for x
    x = 9,134,770,167.00/103,904
  6. Step 6: Final answer
    x = 87,915.48

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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.