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Finding the Fourth Proportional to 115,101.81, 158,840.78 and 66,713.07

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Solution

The fourth proportional to 115,101.81, 158,840.78 and 66,713.07 is: 92,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,101.81 : 158,840.78 = 66,713.07 : x
  2. Step 2: Convert to fraction form
    115,101.81/158,840.78 = 66,713.07/x
  3. Step 3: Cross multiply
    115,101.81x = 158,840.78 × 66,713.07
  4. Step 4: Simplify right side
    115,101.81x = 10,596,756,100.31
  5. Step 5: Solve for x
    x = 10,596,756,100.31/115,101.81
  6. Step 6: Final answer
    x = 92,064.20

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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.