Home / 140,686.61-194,166.01-80,243.40

Finding the Fourth Proportional to 140,686.61, 194,166.01 and 80,243.40

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Solution

The fourth proportional to 140,686.61, 194,166.01 and 80,243.40 is: 110,746.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,686.61 : 194,166.01 = 80,243.40 : x
  2. Step 2: Convert to fraction form
    140,686.61/194,166.01 = 80,243.40/x
  3. Step 3: Cross multiply
    140,686.61x = 194,166.01 × 80,243.40
  4. Step 4: Simplify right side
    140,686.61x = 15,580,540,806.83
  5. Step 5: Solve for x
    x = 15,580,540,806.83/140,686.61
  6. Step 6: Final answer
    x = 110,746.44

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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.