Home / 102,784.13-141,865.80-66,911.66

Finding the Fourth Proportional to 102,784.13, 141,865.80 and 66,911.66

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Solution

The fourth proportional to 102,784.13, 141,865.80 and 66,911.66 is: 92,353.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,784.13 : 141,865.80 = 66,911.66 : x
  2. Step 2: Convert to fraction form
    102,784.13/141,865.80 = 66,911.66/x
  3. Step 3: Cross multiply
    102,784.13x = 141,865.80 × 66,911.66
  4. Step 4: Simplify right side
    102,784.13x = 9,492,476,175.23
  5. Step 5: Solve for x
    x = 9,492,476,175.23/102,784.13
  6. Step 6: Final answer
    x = 92,353.52

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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.