Home / 134,137.50-185,109.19-76,776.54

Finding the Fourth Proportional to 134,137.50, 185,109.19 and 76,776.54

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Solution

The fourth proportional to 134,137.50, 185,109.19 and 76,776.54 is: 105,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,137.50 : 185,109.19 = 76,776.54 : x
  2. Step 2: Convert to fraction form
    134,137.50/185,109.19 = 76,776.54/x
  3. Step 3: Cross multiply
    134,137.50x = 185,109.19 × 76,776.54
  4. Step 4: Simplify right side
    134,137.50x = 14,212,043,130.40
  5. Step 5: Solve for x
    x = 14,212,043,130.40/134,137.50
  6. Step 6: Final answer
    x = 105,951.30

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1.5x scale

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.