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Finding the Fourth Proportional to 149,708.39, 206,632.31 and 98,730.32

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Solution

The fourth proportional to 149,708.39, 206,632.31 and 98,730.32 is: 136,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,708.39 : 206,632.31 = 98,730.32 : x
  2. Step 2: Convert to fraction form
    149,708.39/206,632.31 = 98,730.32/x
  3. Step 3: Cross multiply
    149,708.39x = 206,632.31 × 98,730.32
  4. Step 4: Simplify right side
    149,708.39x = 20,400,872,561.83
  5. Step 5: Solve for x
    x = 20,400,872,561.83/149,708.39
  6. Step 6: Final answer
    x = 136,270.74

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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.