Home / 142,334.75-196,426.11-77,807.54

Finding the Fourth Proportional to 142,334.75, 196,426.11 and 77,807.54

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Solution

The fourth proportional to 142,334.75, 196,426.11 and 77,807.54 is: 107,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,334.75 : 196,426.11 = 77,807.54 : x
  2. Step 2: Convert to fraction form
    142,334.75/196,426.11 = 77,807.54/x
  3. Step 3: Cross multiply
    142,334.75x = 196,426.11 × 77,807.54
  4. Step 4: Simplify right side
    142,334.75x = 15,283,431,428.74
  5. Step 5: Solve for x
    x = 15,283,431,428.74/142,334.75
  6. Step 6: Final answer
    x = 107,376.67

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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.