Home / 99,202.41-136,901.75-56,774.61

Finding the Fourth Proportional to 99,202.41, 136,901.75 and 56,774.61

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Solution

The fourth proportional to 99,202.41, 136,901.75 and 56,774.61 is: 78,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,202.41 : 136,901.75 = 56,774.61 : x
  2. Step 2: Convert to fraction form
    99,202.41/136,901.75 = 56,774.61/x
  3. Step 3: Cross multiply
    99,202.41x = 136,901.75 × 56,774.61
  4. Step 4: Simplify right side
    99,202.41x = 7,772,543,180.69
  5. Step 5: Solve for x
    x = 7,772,543,180.69/99,202.41
  6. Step 6: Final answer
    x = 78,350.35

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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.