Home / 128,835.72-193,209.84-49,928.76

Finding the Fourth Proportional to 128,835.72, 193,209.84 and 49,928.76

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Solution

The fourth proportional to 128,835.72, 193,209.84 and 49,928.76 is: 74,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,835.72 : 193,209.84 = 49,928.76 : x
  2. Step 2: Convert to fraction form
    128,835.72/193,209.84 = 49,928.76/x
  3. Step 3: Cross multiply
    128,835.72x = 193,209.84 × 49,928.76
  4. Step 4: Simplify right side
    128,835.72x = 9,646,727,731.00
  5. Step 5: Solve for x
    x = 9,646,727,731.00/128,835.72
  6. Step 6: Final answer
    x = 74,876.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.