Home / 142,306.56-196,365.96-78,635.64

Finding the Fourth Proportional to 142,306.56, 196,365.96 and 78,635.64

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Solution

The fourth proportional to 142,306.56, 196,365.96 and 78,635.64 is: 108,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,306.56 : 196,365.96 = 78,635.64 : x
  2. Step 2: Convert to fraction form
    142,306.56/196,365.96 = 78,635.64/x
  3. Step 3: Cross multiply
    142,306.56x = 196,365.96 × 78,635.64
  4. Step 4: Simplify right side
    142,306.56x = 15,441,362,938.81
  5. Step 5: Solve for x
    x = 15,441,362,938.81/142,306.56
  6. Step 6: Final answer
    x = 108,507.74

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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.