Home / 157,787.88-217,749.06-86,168.76

Finding the Fourth Proportional to 157,787.88, 217,749.06 and 86,168.76

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Solution

The fourth proportional to 157,787.88, 217,749.06 and 86,168.76 is: 118,913.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,787.88 : 217,749.06 = 86,168.76 : x
  2. Step 2: Convert to fraction form
    157,787.88/217,749.06 = 86,168.76/x
  3. Step 3: Cross multiply
    157,787.88x = 217,749.06 × 86,168.76
  4. Step 4: Simplify right side
    157,787.88x = 18,763,166,491.37
  5. Step 5: Solve for x
    x = 18,763,166,491.37/157,787.88
  6. Step 6: Final answer
    x = 118,913.86

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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.