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Finding the Fourth Proportional to 109,156.70, 150,625.54 and 61,409.02

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Solution

The fourth proportional to 109,156.70, 150,625.54 and 61,409.02 is: 84,738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,156.70 : 150,625.54 = 61,409.02 : x
  2. Step 2: Convert to fraction form
    109,156.70/150,625.54 = 61,409.02/x
  3. Step 3: Cross multiply
    109,156.70x = 150,625.54 × 61,409.02
  4. Step 4: Simplify right side
    109,156.70x = 9,249,766,798.37
  5. Step 5: Solve for x
    x = 9,249,766,798.37/109,156.70
  6. Step 6: Final answer
    x = 84,738.42

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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.