Home / 100,570.48-138,771.85-58,120.82

Finding the Fourth Proportional to 100,570.48, 138,771.85 and 58,120.82

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Solution

The fourth proportional to 100,570.48, 138,771.85 and 58,120.82 is: 80,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,570.48 : 138,771.85 = 58,120.82 : x
  2. Step 2: Convert to fraction form
    100,570.48/138,771.85 = 58,120.82/x
  3. Step 3: Cross multiply
    100,570.48x = 138,771.85 × 58,120.82
  4. Step 4: Simplify right side
    100,570.48x = 8,065,533,714.92
  5. Step 5: Solve for x
    x = 8,065,533,714.92/100,570.48
  6. Step 6: Final answer
    x = 80,197.82

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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.