Home / 142,975.40-197,329.72-79,333.72

Finding the Fourth Proportional to 142,975.40, 197,329.72 and 79,333.72

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Solution

The fourth proportional to 142,975.40, 197,329.72 and 79,333.72 is: 109,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,975.40 : 197,329.72 = 79,333.72 : x
  2. Step 2: Convert to fraction form
    142,975.40/197,329.72 = 79,333.72/x
  3. Step 3: Cross multiply
    142,975.40x = 197,329.72 × 79,333.72
  4. Step 4: Simplify right side
    142,975.40x = 15,654,900,754.16
  5. Step 5: Solve for x
    x = 15,654,900,754.16/142,975.40
  6. Step 6: Final answer
    x = 109,493.67

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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.