Home / 99,883.64-137,858.79-64,118.90

Finding the Fourth Proportional to 99,883.64, 137,858.79 and 64,118.90

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Solution

The fourth proportional to 99,883.64, 137,858.79 and 64,118.90 is: 88,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,883.64 : 137,858.79 = 64,118.90 : x
  2. Step 2: Convert to fraction form
    99,883.64/137,858.79 = 64,118.90/x
  3. Step 3: Cross multiply
    99,883.64x = 137,858.79 × 64,118.90
  4. Step 4: Simplify right side
    99,883.64x = 8,839,353,970.13
  5. Step 5: Solve for x
    x = 8,839,353,970.13/99,883.64
  6. Step 6: Final answer
    x = 88,496.51

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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.