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Finding the Fourth Proportional to 101,463.95, 140,020.42 and 56,143.85

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Solution

The fourth proportional to 101,463.95, 140,020.42 and 56,143.85 is: 77,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,463.95 : 140,020.42 = 56,143.85 : x
  2. Step 2: Convert to fraction form
    101,463.95/140,020.42 = 56,143.85/x
  3. Step 3: Cross multiply
    101,463.95x = 140,020.42 × 56,143.85
  4. Step 4: Simplify right side
    101,463.95x = 7,861,284,616.96
  5. Step 5: Solve for x
    x = 7,861,284,616.96/101,463.95
  6. Step 6: Final answer
    x = 77,478.60

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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.