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Finding the Fourth Proportional to 103,903.74, 143,376.75 and 63,628.92

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Solution

The fourth proportional to 103,903.74, 143,376.75 and 63,628.92 is: 87,801.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,903.74 : 143,376.75 = 63,628.92 : x
  2. Step 2: Convert to fraction form
    103,903.74/143,376.75 = 63,628.92/x
  3. Step 3: Cross multiply
    103,903.74x = 143,376.75 × 63,628.92
  4. Step 4: Simplify right side
    103,903.74x = 9,122,907,755.61
  5. Step 5: Solve for x
    x = 9,122,907,755.61/103,903.74
  6. Step 6: Final answer
    x = 87,801.53

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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.