Home / 99,286.90-137,018.52-56,859.10

Finding the Fourth Proportional to 99,286.90, 137,018.52 and 56,859.10

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Solution

The fourth proportional to 99,286.90, 137,018.52 and 56,859.10 is: 78,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,286.90 : 137,018.52 = 56,859.10 : x
  2. Step 2: Convert to fraction form
    99,286.90/137,018.52 = 56,859.10/x
  3. Step 3: Cross multiply
    99,286.90x = 137,018.52 × 56,859.10
  4. Step 4: Simplify right side
    99,286.90x = 7,790,749,730.53
  5. Step 5: Solve for x
    x = 7,790,749,730.53/99,286.90
  6. Step 6: Final answer
    x = 78,467.05

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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.