Home / 135,302.64-186,755.18-78,724.95

Finding the Fourth Proportional to 135,302.64, 186,755.18 and 78,724.95

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Solution

The fourth proportional to 135,302.64, 186,755.18 and 78,724.95 is: 108,662.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,302.64 : 186,755.18 = 78,724.95 : x
  2. Step 2: Convert to fraction form
    135,302.64/186,755.18 = 78,724.95/x
  3. Step 3: Cross multiply
    135,302.64x = 186,755.18 × 78,724.95
  4. Step 4: Simplify right side
    135,302.64x = 14,702,291,814.12
  5. Step 5: Solve for x
    x = 14,702,291,814.12/135,302.64
  6. Step 6: Final answer
    x = 108,662.27

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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.