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Finding the Fourth Proportional to 154,840.80, 213,684.48 and 91,166.88

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Solution

The fourth proportional to 154,840.80, 213,684.48 and 91,166.88 is: 125,812.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,840.80 : 213,684.48 = 91,166.88 : x
  2. Step 2: Convert to fraction form
    154,840.80/213,684.48 = 91,166.88/x
  3. Step 3: Cross multiply
    154,840.80x = 213,684.48 × 91,166.88
  4. Step 4: Simplify right side
    154,840.80x = 19,480,947,346.02
  5. Step 5: Solve for x
    x = 19,480,947,346.02/154,840.80
  6. Step 6: Final answer
    x = 125,812.75

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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.