Home / 149,054.52-205,695.09-85,392.57

Finding the Fourth Proportional to 149,054.52, 205,695.09 and 85,392.57

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Solution

The fourth proportional to 149,054.52, 205,695.09 and 85,392.57 is: 117,841.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,054.52 : 205,695.09 = 85,392.57 : x
  2. Step 2: Convert to fraction form
    149,054.52/205,695.09 = 85,392.57/x
  3. Step 3: Cross multiply
    149,054.52x = 205,695.09 × 85,392.57
  4. Step 4: Simplify right side
    149,054.52x = 17,564,832,371.48
  5. Step 5: Solve for x
    x = 17,564,832,371.48/149,054.52
  6. Step 6: Final answer
    x = 117,841.66

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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.