Home / 128,749.52-193,176.12-45,701.84

Finding the Fourth Proportional to 128,749.52, 193,176.12 and 45,701.84

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Solution

The fourth proportional to 128,749.52, 193,176.12 and 45,701.84 is: 68,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,749.52 : 193,176.12 = 45,701.84 : x
  2. Step 2: Convert to fraction form
    128,749.52/193,176.12 = 45,701.84/x
  3. Step 3: Cross multiply
    128,749.52x = 193,176.12 × 45,701.84
  4. Step 4: Simplify right side
    128,749.52x = 8,828,504,128.06
  5. Step 5: Solve for x
    x = 8,828,504,128.06/128,749.52
  6. Step 6: Final answer
    x = 68,571.16

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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.