Home / 99,120.37-136,788.15-56,099.86

Finding the Fourth Proportional to 99,120.37, 136,788.15 and 56,099.86

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Solution

The fourth proportional to 99,120.37, 136,788.15 and 56,099.86 is: 77,418.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.37 : 136,788.15 = 56,099.86 : x
  2. Step 2: Convert to fraction form
    99,120.37/136,788.15 = 56,099.86/x
  3. Step 3: Cross multiply
    99,120.37x = 136,788.15 × 56,099.86
  4. Step 4: Simplify right side
    99,120.37x = 7,673,795,656.95
  5. Step 5: Solve for x
    x = 7,673,795,656.95/99,120.37
  6. Step 6: Final answer
    x = 77,418.96

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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.