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Finding the Fourth Proportional to 103,954.53, 143,494.11 and 61,512.96

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Solution

The fourth proportional to 103,954.53, 143,494.11 and 61,512.96 is: 84,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,954.53 : 143,494.11 = 61,512.96 : x
  2. Step 2: Convert to fraction form
    103,954.53/143,494.11 = 61,512.96/x
  3. Step 3: Cross multiply
    103,954.53x = 143,494.11 × 61,512.96
  4. Step 4: Simplify right side
    103,954.53x = 8,826,747,448.67
  5. Step 5: Solve for x
    x = 8,826,747,448.67/103,954.53
  6. Step 6: Final answer
    x = 84,909.70

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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.