Home / 140,136.11-193,391.93-76,478.00

Finding the Fourth Proportional to 140,136.11, 193,391.93 and 76,478.00

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Solution

The fourth proportional to 140,136.11, 193,391.93 and 76,478.00 is: 105,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.11 : 193,391.93 = 76,478.00 : x
  2. Step 2: Convert to fraction form
    140,136.11/193,391.93 = 76,478.00/x
  3. Step 3: Cross multiply
    140,136.11x = 193,391.93 × 76,478.00
  4. Step 4: Simplify right side
    140,136.11x = 14,790,227,246.78
  5. Step 5: Solve for x
    x = 14,790,227,246.78/140,136.11
  6. Step 6: Final answer
    x = 105,541.87

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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.