Home / 138,977.27-191,809.20-87,994.74

Finding the Fourth Proportional to 138,977.27, 191,809.20 and 87,994.74

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Solution

The fourth proportional to 138,977.27, 191,809.20 and 87,994.74 is: 121,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,977.27 : 191,809.20 = 87,994.74 : x
  2. Step 2: Convert to fraction form
    138,977.27/191,809.20 = 87,994.74/x
  3. Step 3: Cross multiply
    138,977.27x = 191,809.20 × 87,994.74
  4. Step 4: Simplify right side
    138,977.27x = 16,878,200,158.98
  5. Step 5: Solve for x
    x = 16,878,200,158.98/138,977.27
  6. Step 6: Final answer
    x = 121,445.76

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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.