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Finding the Fourth Proportional to 136,039.54, 187,786.88 and 90,700.98

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Solution

The fourth proportional to 136,039.54, 187,786.88 and 90,700.98 is: 125,202.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,039.54 : 187,786.88 = 90,700.98 : x
  2. Step 2: Convert to fraction form
    136,039.54/187,786.88 = 90,700.98/x
  3. Step 3: Cross multiply
    136,039.54x = 187,786.88 × 90,700.98
  4. Step 4: Simplify right side
    136,039.54x = 17,032,454,047.14
  5. Step 5: Solve for x
    x = 17,032,454,047.14/136,039.54
  6. Step 6: Final answer
    x = 125,202.23

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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.