Home / 157,405.43-217,219.77-85,785.41

Finding the Fourth Proportional to 157,405.43, 217,219.77 and 85,785.41

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Solution

The fourth proportional to 157,405.43, 217,219.77 and 85,785.41 is: 118,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,405.43 : 217,219.77 = 85,785.41 : x
  2. Step 2: Convert to fraction form
    157,405.43/217,219.77 = 85,785.41/x
  3. Step 3: Cross multiply
    157,405.43x = 217,219.77 × 85,785.41
  4. Step 4: Simplify right side
    157,405.43x = 18,634,285,943.46
  5. Step 5: Solve for x
    x = 18,634,285,943.46/157,405.43
  6. Step 6: Final answer
    x = 118,384.01

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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.