Home / 149,256.64-205,623.74-103,856.66

Finding the Fourth Proportional to 149,256.64, 205,623.74 and 103,856.66

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Solution

The fourth proportional to 149,256.64, 205,623.74 and 103,856.66 is: 143,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,256.64 : 205,623.74 = 103,856.66 : x
  2. Step 2: Convert to fraction form
    149,256.64/205,623.74 = 103,856.66/x
  3. Step 3: Cross multiply
    149,256.64x = 205,623.74 × 103,856.66
  4. Step 4: Simplify right side
    149,256.64x = 21,355,394,084.63
  5. Step 5: Solve for x
    x = 21,355,394,084.63/149,256.64
  6. Step 6: Final answer
    x = 143,078.35

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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.