Home / 157,555.48-236,438.32-81,723.91

Finding the Fourth Proportional to 157,555.48, 236,438.32 and 81,723.91

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Solution

The fourth proportional to 157,555.48, 236,438.32 and 81,723.91 is: 122,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,555.48 : 236,438.32 = 81,723.91 : x
  2. Step 2: Convert to fraction form
    157,555.48/236,438.32 = 81,723.91/x
  3. Step 3: Cross multiply
    157,555.48x = 236,438.32 × 81,723.91
  4. Step 4: Simplify right side
    157,555.48x = 19,322,663,984.23
  5. Step 5: Solve for x
    x = 19,322,663,984.23/157,555.48
  6. Step 6: Final answer
    x = 122,640.38

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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.