Home / 104,857.83-157,131.23-77,019.75

Finding the Fourth Proportional to 104,857.83, 157,131.23 and 77,019.75

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Solution

The fourth proportional to 104,857.83, 157,131.23 and 77,019.75 is: 115,415.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,857.83 : 157,131.23 = 77,019.75 : x
  2. Step 2: Convert to fraction form
    104,857.83/157,131.23 = 77,019.75/x
  3. Step 3: Cross multiply
    104,857.83x = 157,131.23 × 77,019.75
  4. Step 4: Simplify right side
    104,857.83x = 12,102,208,108.63
  5. Step 5: Solve for x
    x = 12,102,208,108.63/104,857.83
  6. Step 6: Final answer
    x = 115,415.39

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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.