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Finding the Fourth Proportional to 158,594.52, 218,860.74 and 86,975.08

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Solution

The fourth proportional to 158,594.52, 218,860.74 and 86,975.08 is: 120,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,594.52 : 218,860.74 = 86,975.08 : x
  2. Step 2: Convert to fraction form
    158,594.52/218,860.74 = 86,975.08/x
  3. Step 3: Cross multiply
    158,594.52x = 218,860.74 × 86,975.08
  4. Step 4: Simplify right side
    158,594.52x = 19,035,430,370.36
  5. Step 5: Solve for x
    x = 19,035,430,370.36/158,594.52
  6. Step 6: Final answer
    x = 120,025.78

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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.