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Finding the Fourth Proportional to 103,807.60, 143,257.34 and 63,520.62

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Solution

The fourth proportional to 103,807.60, 143,257.34 and 63,520.62 is: 87,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.60 : 143,257.34 = 63,520.62 : x
  2. Step 2: Convert to fraction form
    103,807.60/143,257.34 = 63,520.62/x
  3. Step 3: Cross multiply
    103,807.60x = 143,257.34 × 63,520.62
  4. Step 4: Simplify right side
    103,807.60x = 9,099,795,056.35
  5. Step 5: Solve for x
    x = 9,099,795,056.35/103,807.60
  6. Step 6: Final answer
    x = 87,660.20

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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.