Home / 142,365.62-196,474.47-78,709.34

Finding the Fourth Proportional to 142,365.62, 196,474.47 and 78,709.34

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Solution

The fourth proportional to 142,365.62, 196,474.47 and 78,709.34 is: 108,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,365.62 : 196,474.47 = 78,709.34 : x
  2. Step 2: Convert to fraction form
    142,365.62/196,474.47 = 78,709.34/x
  3. Step 3: Cross multiply
    142,365.62x = 196,474.47 × 78,709.34
  4. Step 4: Simplify right side
    142,365.62x = 15,464,375,860.55
  5. Step 5: Solve for x
    x = 15,464,375,860.55/142,365.62
  6. Step 6: Final answer
    x = 108,624.37

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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.