Home / 138,627.23-191,335.46-87,607.58

Finding the Fourth Proportional to 138,627.23, 191,335.46 and 87,607.58

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Solution

The fourth proportional to 138,627.23, 191,335.46 and 87,607.58 is: 120,917.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,627.23 : 191,335.46 = 87,607.58 : x
  2. Step 2: Convert to fraction form
    138,627.23/191,335.46 = 87,607.58/x
  3. Step 3: Cross multiply
    138,627.23x = 191,335.46 × 87,607.58
  4. Step 4: Simplify right side
    138,627.23x = 16,762,435,224.07
  5. Step 5: Solve for x
    x = 16,762,435,224.07/138,627.23
  6. Step 6: Final answer
    x = 120,917.34

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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.