Home / 157,811.33-217,778.00-86,191.35

Finding the Fourth Proportional to 157,811.33, 217,778.00 and 86,191.35

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Solution

The fourth proportional to 157,811.33, 217,778.00 and 86,191.35 is: 118,943.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,811.33 : 217,778.00 = 86,191.35 : x
  2. Step 2: Convert to fraction form
    157,811.33/217,778.00 = 86,191.35/x
  3. Step 3: Cross multiply
    157,811.33x = 217,778.00 × 86,191.35
  4. Step 4: Simplify right side
    157,811.33x = 18,770,579,389.34
  5. Step 5: Solve for x
    x = 18,770,579,389.34/157,811.33
  6. Step 6: Final answer
    x = 118,943.17

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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.