Home / 104,380-144,040.20-56,631.52

Finding the Fourth Proportional to 104,380, 144,040.20 and 56,631.52

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Solution

The fourth proportional to 104,380, 144,040.20 and 56,631.52 is: 78,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,380 : 144,040.20 = 56,631.52 : x
  2. Step 2: Convert to fraction form
    104,380/144,040.20 = 56,631.52/x
  3. Step 3: Cross multiply
    104,380x = 144,040.20 × 56,631.52
  4. Step 4: Simplify right side
    104,380x = 8,157,215,467.10
  5. Step 5: Solve for x
    x = 8,157,215,467.10/104,380
  6. Step 6: Final answer
    x = 78,149.22

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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.