Home / 142,346.88-196,438.64-85,769.19

Finding the Fourth Proportional to 142,346.88, 196,438.64 and 85,769.19

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Solution

The fourth proportional to 142,346.88, 196,438.64 and 85,769.19 is: 118,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,346.88 : 196,438.64 = 85,769.19 : x
  2. Step 2: Convert to fraction form
    142,346.88/196,438.64 = 85,769.19/x
  3. Step 3: Cross multiply
    142,346.88x = 196,438.64 × 85,769.19
  4. Step 4: Simplify right side
    142,346.88x = 16,848,382,608.66
  5. Step 5: Solve for x
    x = 16,848,382,608.66/142,346.88
  6. Step 6: Final answer
    x = 118,361.45

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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.