Home / 128,834.26-193,306.47-66,548.50

Finding the Fourth Proportional to 128,834.26, 193,306.47 and 66,548.50

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Solution

The fourth proportional to 128,834.26, 193,306.47 and 66,548.50 is: 99,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,834.26 : 193,306.47 = 66,548.50 : x
  2. Step 2: Convert to fraction form
    128,834.26/193,306.47 = 66,548.50/x
  3. Step 3: Cross multiply
    128,834.26x = 193,306.47 × 66,548.50
  4. Step 4: Simplify right side
    128,834.26x = 12,864,256,109.99
  5. Step 5: Solve for x
    x = 12,864,256,109.99/128,834.26
  6. Step 6: Final answer
    x = 99,851.20

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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.