Home / 127,785.64-191,665.11-56,709.49

Finding the Fourth Proportional to 127,785.64, 191,665.11 and 56,709.49

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Solution

The fourth proportional to 127,785.64, 191,665.11 and 56,709.49 is: 85,058.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,785.64 : 191,665.11 = 56,709.49 : x
  2. Step 2: Convert to fraction form
    127,785.64/191,665.11 = 56,709.49/x
  3. Step 3: Cross multiply
    127,785.64x = 191,665.11 × 56,709.49
  4. Step 4: Simplify right side
    127,785.64x = 10,869,230,638.89
  5. Step 5: Solve for x
    x = 10,869,230,638.89/127,785.64
  6. Step 6: Final answer
    x = 85,058.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.