Home / 142,313.95-196,391.01-78,652.81

Finding the Fourth Proportional to 142,313.95, 196,391.01 and 78,652.81

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Solution

The fourth proportional to 142,313.95, 196,391.01 and 78,652.81 is: 108,539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,313.95 : 196,391.01 = 78,652.81 : x
  2. Step 2: Convert to fraction form
    142,313.95/196,391.01 = 78,652.81/x
  3. Step 3: Cross multiply
    142,313.95x = 196,391.01 × 78,652.81
  4. Step 4: Simplify right side
    142,313.95x = 15,446,704,795.24
  5. Step 5: Solve for x
    x = 15,446,704,795.24/142,313.95
  6. Step 6: Final answer
    x = 108,539.64

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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.