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Finding the Fourth Proportional to 115,185.78, 158,963.63 and 69,868.08

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Solution

The fourth proportional to 115,185.78, 158,963.63 and 69,868.08 is: 96,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,185.78 : 158,963.63 = 69,868.08 : x
  2. Step 2: Convert to fraction form
    115,185.78/158,963.63 = 69,868.08/x
  3. Step 3: Cross multiply
    115,185.78x = 158,963.63 × 69,868.08
  4. Step 4: Simplify right side
    115,185.78x = 11,106,483,268.59
  5. Step 5: Solve for x
    x = 11,106,483,268.59/115,185.78
  6. Step 6: Final answer
    x = 96,422.35

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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.