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Finding the Fourth Proportional to 115,843.80, 159,816.93 and 70,485.42

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Solution

The fourth proportional to 115,843.80, 159,816.93 and 70,485.42 is: 97,240.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,843.80 : 159,816.93 = 70,485.42 : x
  2. Step 2: Convert to fraction form
    115,843.80/159,816.93 = 70,485.42/x
  3. Step 3: Cross multiply
    115,843.80x = 159,816.93 × 70,485.42
  4. Step 4: Simplify right side
    115,843.80x = 11,264,763,434.16
  5. Step 5: Solve for x
    x = 11,264,763,434.16/115,843.80
  6. Step 6: Final answer
    x = 97,240.97

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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.