Home / 128,491.05-192,625.82-61,977.93

Finding the Fourth Proportional to 128,491.05, 192,625.82 and 61,977.93

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Solution

The fourth proportional to 128,491.05, 192,625.82 and 61,977.93 is: 92,913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,491.05 : 192,625.82 = 61,977.93 : x
  2. Step 2: Convert to fraction form
    128,491.05/192,625.82 = 61,977.93/x
  3. Step 3: Cross multiply
    128,491.05x = 192,625.82 × 61,977.93
  4. Step 4: Simplify right side
    128,491.05x = 11,938,549,278.26
  5. Step 5: Solve for x
    x = 11,938,549,278.26/128,491.05
  6. Step 6: Final answer
    x = 92,913.47

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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.