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Finding the Fourth Proportional to 103,975.50, 143,486.20 and 56,228.86

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Solution

The fourth proportional to 103,975.50, 143,486.20 and 56,228.86 is: 77,595.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,975.50 : 143,486.20 = 56,228.86 : x
  2. Step 2: Convert to fraction form
    103,975.50/143,486.20 = 56,228.86/x
  3. Step 3: Cross multiply
    103,975.50x = 143,486.20 × 56,228.86
  4. Step 4: Simplify right side
    103,975.50x = 8,068,065,451.73
  5. Step 5: Solve for x
    x = 8,068,065,451.73/103,975.50
  6. Step 6: Final answer
    x = 77,595.83

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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.