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Finding the Fourth Proportional to 149,706.14, 206,629.20 and 98,728.07

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Solution

The fourth proportional to 149,706.14, 206,629.20 and 98,728.07 is: 136,267.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,706.14 : 206,629.20 = 98,728.07 : x
  2. Step 2: Convert to fraction form
    149,706.14/206,629.20 = 98,728.07/x
  3. Step 3: Cross multiply
    149,706.14x = 206,629.20 × 98,728.07
  4. Step 4: Simplify right side
    149,706.14x = 20,400,101,088.50
  5. Step 5: Solve for x
    x = 20,400,101,088.50/149,706.14
  6. Step 6: Final answer
    x = 136,267.64

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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.