Home / 134,977.50-186,268.97-78,392.52

Finding the Fourth Proportional to 134,977.50, 186,268.97 and 78,392.52

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Solution

The fourth proportional to 134,977.50, 186,268.97 and 78,392.52 is: 108,181.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,977.50 : 186,268.97 = 78,392.52 : x
  2. Step 2: Convert to fraction form
    134,977.50/186,268.97 = 78,392.52/x
  3. Step 3: Cross multiply
    134,977.50x = 186,268.97 × 78,392.52
  4. Step 4: Simplify right side
    134,977.50x = 14,602,093,956.10
  5. Step 5: Solve for x
    x = 14,602,093,956.10/134,977.50
  6. Step 6: Final answer
    x = 108,181.69

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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.