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Finding the Fourth Proportional to 115,133.72, 158,873.74 and 84,935.79

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Solution

The fourth proportional to 115,133.72, 158,873.74 and 84,935.79 is: 117,203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,133.72 : 158,873.74 = 84,935.79 : x
  2. Step 2: Convert to fraction form
    115,133.72/158,873.74 = 84,935.79/x
  3. Step 3: Cross multiply
    115,133.72x = 158,873.74 × 84,935.79
  4. Step 4: Simplify right side
    115,133.72x = 13,494,066,404.82
  5. Step 5: Solve for x
    x = 13,494,066,404.82/115,133.72
  6. Step 6: Final answer
    x = 117,203.43

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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.