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Finding the Fourth Proportional to 101,313.64, 139,812.78 and 56,601.64

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Solution

The fourth proportional to 101,313.64, 139,812.78 and 56,601.64 is: 78,110.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,313.64 : 139,812.78 = 56,601.64 : x
  2. Step 2: Convert to fraction form
    101,313.64/139,812.78 = 56,601.64/x
  3. Step 3: Cross multiply
    101,313.64x = 139,812.78 × 56,601.64
  4. Step 4: Simplify right side
    101,313.64x = 7,913,632,640.96
  5. Step 5: Solve for x
    x = 7,913,632,640.96/101,313.64
  6. Step 6: Final answer
    x = 78,110.24

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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.