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Finding the Fourth Proportional to 100,780.42, 151,264.09 and 50,895.63

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Solution

The fourth proportional to 100,780.42, 151,264.09 and 50,895.63 is: 76,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,780.42 : 151,264.09 = 50,895.63 : x
  2. Step 2: Convert to fraction form
    100,780.42/151,264.09 = 50,895.63/x
  3. Step 3: Cross multiply
    100,780.42x = 151,264.09 × 50,895.63
  4. Step 4: Simplify right side
    100,780.42x = 7,698,681,156.93
  5. Step 5: Solve for x
    x = 7,698,681,156.93/100,780.42
  6. Step 6: Final answer
    x = 76,390.64

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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.