Home / 142,830.09-197,099.87-78,297.93

Finding the Fourth Proportional to 142,830.09, 197,099.87 and 78,297.93

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Solution

The fourth proportional to 142,830.09, 197,099.87 and 78,297.93 is: 108,048.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,830.09 : 197,099.87 = 78,297.93 : x
  2. Step 2: Convert to fraction form
    142,830.09/197,099.87 = 78,297.93/x
  3. Step 3: Cross multiply
    142,830.09x = 197,099.87 × 78,297.93
  4. Step 4: Simplify right side
    142,830.09x = 15,432,511,432.78
  5. Step 5: Solve for x
    x = 15,432,511,432.78/142,830.09
  6. Step 6: Final answer
    x = 108,048.04

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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.