Home / 135,282.08-186,655.64-87,477.90

Finding the Fourth Proportional to 135,282.08, 186,655.64 and 87,477.90

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Solution

The fourth proportional to 135,282.08, 186,655.64 and 87,477.90 is: 120,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,282.08 : 186,655.64 = 87,477.90 : x
  2. Step 2: Convert to fraction form
    135,282.08/186,655.64 = 87,477.90/x
  3. Step 3: Cross multiply
    135,282.08x = 186,655.64 × 87,477.90
  4. Step 4: Simplify right side
    135,282.08x = 16,328,242,972.97
  5. Step 5: Solve for x
    x = 16,328,242,972.97/135,282.08
  6. Step 6: Final answer
    x = 120,697.76

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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.