Home / 109,405.74-150,904.98-66,985.26

Finding the Fourth Proportional to 109,405.74, 150,904.98 and 66,985.26

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Solution

The fourth proportional to 109,405.74, 150,904.98 and 66,985.26 is: 92,393.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,405.74 : 150,904.98 = 66,985.26 : x
  2. Step 2: Convert to fraction form
    109,405.74/150,904.98 = 66,985.26/x
  3. Step 3: Cross multiply
    109,405.74x = 150,904.98 × 66,985.26
  4. Step 4: Simplify right side
    109,405.74x = 10,108,409,320.59
  5. Step 5: Solve for x
    x = 10,108,409,320.59/109,405.74
  6. Step 6: Final answer
    x = 92,393.77

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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.