Home / 142,975.89-197,330.39-79,334.19

Finding the Fourth Proportional to 142,975.89, 197,330.39 and 79,334.19

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Solution

The fourth proportional to 142,975.89, 197,330.39 and 79,334.19 is: 109,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,975.89 : 197,330.39 = 79,334.19 : x
  2. Step 2: Convert to fraction form
    142,975.89/197,330.39 = 79,334.19/x
  3. Step 3: Cross multiply
    142,975.89x = 197,330.39 × 79,334.19
  4. Step 4: Simplify right side
    142,975.89x = 15,655,046,653.03
  5. Step 5: Solve for x
    x = 15,655,046,653.03/142,975.89
  6. Step 6: Final answer
    x = 109,494.31

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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.