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Finding the Fourth Proportional to 158,411.64, 218,608.02 and 86,794.38

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Solution

The fourth proportional to 158,411.64, 218,608.02 and 86,794.38 is: 119,776.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,411.64 : 218,608.02 = 86,794.38 : x
  2. Step 2: Convert to fraction form
    158,411.64/218,608.02 = 86,794.38/x
  3. Step 3: Cross multiply
    158,411.64x = 218,608.02 × 86,794.38
  4. Step 4: Simplify right side
    158,411.64x = 18,973,947,558.93
  5. Step 5: Solve for x
    x = 18,973,947,558.93/158,411.64
  6. Step 6: Final answer
    x = 119,776.22

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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.