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Finding the Fourth Proportional to 136,274.40, 187,984.80 and 98,560.80

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Solution

The fourth proportional to 136,274.40, 187,984.80 and 98,560.80 is: 135,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,274.40 : 187,984.80 = 98,560.80 : x
  2. Step 2: Convert to fraction form
    136,274.40/187,984.80 = 98,560.80/x
  3. Step 3: Cross multiply
    136,274.40x = 187,984.80 × 98,560.80
  4. Step 4: Simplify right side
    136,274.40x = 18,527,932,275.84
  5. Step 5: Solve for x
    x = 18,527,932,275.84/136,274.40
  6. Step 6: Final answer
    x = 135,960.48

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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.