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Finding the Fourth Proportional to 154,662.75, 213,402.20 and 91,007.55

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Solution

The fourth proportional to 154,662.75, 213,402.20 and 91,007.55 is: 125,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,662.75 : 213,402.20 = 91,007.55 : x
  2. Step 2: Convert to fraction form
    154,662.75/213,402.20 = 91,007.55/x
  3. Step 3: Cross multiply
    154,662.75x = 213,402.20 × 91,007.55
  4. Step 4: Simplify right side
    154,662.75x = 19,421,210,931.57
  5. Step 5: Solve for x
    x = 19,421,210,931.57/154,662.75
  6. Step 6: Final answer
    x = 125,571.35

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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.