Home / 135,069.32-186,410.09-77,711.15

Finding the Fourth Proportional to 135,069.32, 186,410.09 and 77,711.15

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Solution

The fourth proportional to 135,069.32, 186,410.09 and 77,711.15 is: 107,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,069.32 : 186,410.09 = 77,711.15 : x
  2. Step 2: Convert to fraction form
    135,069.32/186,410.09 = 77,711.15/x
  3. Step 3: Cross multiply
    135,069.32x = 186,410.09 × 77,711.15
  4. Step 4: Simplify right side
    135,069.32x = 14,486,142,077.25
  5. Step 5: Solve for x
    x = 14,486,142,077.25/135,069.32
  6. Step 6: Final answer
    x = 107,249.68

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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.