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Finding the Fourth Proportional to 100,623.40, 150,935.10 and 53,967.40

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Solution

The fourth proportional to 100,623.40, 150,935.10 and 53,967.40 is: 80,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,623.40 : 150,935.10 = 53,967.40 : x
  2. Step 2: Convert to fraction form
    100,623.40/150,935.10 = 53,967.40/x
  3. Step 3: Cross multiply
    100,623.40x = 150,935.10 × 53,967.40
  4. Step 4: Simplify right side
    100,623.40x = 8,145,574,915.74
  5. Step 5: Solve for x
    x = 8,145,574,915.74/100,623.40
  6. Step 6: Final answer
    x = 80,951.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.