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Finding the Fourth Proportional to 143,257.80, 214,811.10 and 48,455.40

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Solution

The fourth proportional to 143,257.80, 214,811.10 and 48,455.40 is: 72,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,257.80 : 214,811.10 = 48,455.40 : x
  2. Step 2: Convert to fraction form
    143,257.80/214,811.10 = 48,455.40/x
  3. Step 3: Cross multiply
    143,257.80x = 214,811.10 × 48,455.40
  4. Step 4: Simplify right side
    143,257.80x = 10,408,757,774.94
  5. Step 5: Solve for x
    x = 10,408,757,774.94/143,257.80
  6. Step 6: Final answer
    x = 72,657.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.