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Finding the Fourth Proportional to 101,464.95, 140,021.80 and 56,144.85

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Solution

The fourth proportional to 101,464.95, 140,021.80 and 56,144.85 is: 77,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,464.95 : 140,021.80 = 56,144.85 : x
  2. Step 2: Convert to fraction form
    101,464.95/140,021.80 = 56,144.85/x
  3. Step 3: Cross multiply
    101,464.95x = 140,021.80 × 56,144.85
  4. Step 4: Simplify right side
    101,464.95x = 7,861,502,957.73
  5. Step 5: Solve for x
    x = 7,861,502,957.73/101,464.95
  6. Step 6: Final answer
    x = 77,479.99

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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.