Home / 104,213.45-143,810.71-56,465.78

Finding the Fourth Proportional to 104,213.45, 143,810.71 and 56,465.78

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Solution

The fourth proportional to 104,213.45, 143,810.71 and 56,465.78 is: 77,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,213.45 : 143,810.71 = 56,465.78 : x
  2. Step 2: Convert to fraction form
    104,213.45/143,810.71 = 56,465.78/x
  3. Step 3: Cross multiply
    104,213.45x = 143,810.71 × 56,465.78
  4. Step 4: Simplify right side
    104,213.45x = 8,120,383,653.41
  5. Step 5: Solve for x
    x = 8,120,383,653.41/104,213.45
  6. Step 6: Final answer
    x = 77,920.68

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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.