Home / 135,280.86-186,645.27-81,582.30

Finding the Fourth Proportional to 135,280.86, 186,645.27 and 81,582.30

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Solution

The fourth proportional to 135,280.86, 186,645.27 and 81,582.30 is: 112,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,280.86 : 186,645.27 = 81,582.30 : x
  2. Step 2: Convert to fraction form
    135,280.86/186,645.27 = 81,582.30/x
  3. Step 3: Cross multiply
    135,280.86x = 186,645.27 × 81,582.30
  4. Step 4: Simplify right side
    135,280.86x = 15,226,950,410.72
  5. Step 5: Solve for x
    x = 15,226,950,410.72/135,280.86
  6. Step 6: Final answer
    x = 112,558.05

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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.