Home / 99,135.20-136,744.32-58,820.48

Finding the Fourth Proportional to 99,135.20, 136,744.32 and 58,820.48

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Solution

The fourth proportional to 99,135.20, 136,744.32 and 58,820.48 is: 81,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.20 : 136,744.32 = 58,820.48 : x
  2. Step 2: Convert to fraction form
    99,135.20/136,744.32 = 58,820.48/x
  3. Step 3: Cross multiply
    99,135.20x = 136,744.32 × 58,820.48
  4. Step 4: Simplify right side
    99,135.20x = 8,043,366,539.67
  5. Step 5: Solve for x
    x = 8,043,366,539.67/99,135.20
  6. Step 6: Final answer
    x = 81,135.32

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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.