Home / 157,711.25-217,633.25-86,077.37

Finding the Fourth Proportional to 157,711.25, 217,633.25 and 86,077.37

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Solution

The fourth proportional to 157,711.25, 217,633.25 and 86,077.37 is: 118,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,711.25 : 217,633.25 = 86,077.37 : x
  2. Step 2: Convert to fraction form
    157,711.25/217,633.25 = 86,077.37/x
  3. Step 3: Cross multiply
    157,711.25x = 217,633.25 × 86,077.37
  4. Step 4: Simplify right side
    157,711.25x = 18,733,296,266.00
  5. Step 5: Solve for x
    x = 18,733,296,266.00/157,711.25
  6. Step 6: Final answer
    x = 118,782.25

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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.