Home / 104,281.68-143,909.43-56,535.78

Finding the Fourth Proportional to 104,281.68, 143,909.43 and 56,535.78

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Solution

The fourth proportional to 104,281.68, 143,909.43 and 56,535.78 is: 78,019.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,281.68 : 143,909.43 = 56,535.78 : x
  2. Step 2: Convert to fraction form
    104,281.68/143,909.43 = 56,535.78/x
  3. Step 3: Cross multiply
    104,281.68x = 143,909.43 × 56,535.78
  4. Step 4: Simplify right side
    104,281.68x = 8,136,031,874.41
  5. Step 5: Solve for x
    x = 8,136,031,874.41/104,281.68
  6. Step 6: Final answer
    x = 78,019.76

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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.