Home / 140,108.64-193,344.75-76,445.07

Finding the Fourth Proportional to 140,108.64, 193,344.75 and 76,445.07

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Solution

The fourth proportional to 140,108.64, 193,344.75 and 76,445.07 is: 105,491.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,108.64 : 193,344.75 = 76,445.07 : x
  2. Step 2: Convert to fraction form
    140,108.64/193,344.75 = 76,445.07/x
  3. Step 3: Cross multiply
    140,108.64x = 193,344.75 × 76,445.07
  4. Step 4: Simplify right side
    140,108.64x = 14,780,252,947.88
  5. Step 5: Solve for x
    x = 14,780,252,947.88/140,108.64
  6. Step 6: Final answer
    x = 105,491.37

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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.