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Finding the Fourth Proportional to 149,718.88, 206,646.80 and 98,740.84

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Solution

The fourth proportional to 149,718.88, 206,646.80 and 98,740.84 is: 136,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,718.88 : 206,646.80 = 98,740.84 : x
  2. Step 2: Convert to fraction form
    149,718.88/206,646.80 = 98,740.84/x
  3. Step 3: Cross multiply
    149,718.88x = 206,646.80 × 98,740.84
  4. Step 4: Simplify right side
    149,718.88x = 20,404,478,615.31
  5. Step 5: Solve for x
    x = 20,404,478,615.31/149,718.88
  6. Step 6: Final answer
    x = 136,285.27

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1.5x scale

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.