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Finding the Fourth Proportional to 158,880.38, 219,274.38 and 91,812.38

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Solution

The fourth proportional to 158,880.38, 219,274.38 and 91,812.38 is: 126,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,880.38 : 219,274.38 = 91,812.38 : x
  2. Step 2: Convert to fraction form
    158,880.38/219,274.38 = 91,812.38/x
  3. Step 3: Cross multiply
    158,880.38x = 219,274.38 × 91,812.38
  4. Step 4: Simplify right side
    158,880.38x = 20,132,102,700.82
  5. Step 5: Solve for x
    x = 20,132,102,700.82/158,880.38
  6. Step 6: Final answer
    x = 126,712.33

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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.