Home / 142,907.06-197,211.03-79,255.64

Finding the Fourth Proportional to 142,907.06, 197,211.03 and 79,255.64

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Solution

The fourth proportional to 142,907.06, 197,211.03 and 79,255.64 is: 109,372.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,907.06 : 197,211.03 = 79,255.64 : x
  2. Step 2: Convert to fraction form
    142,907.06/197,211.03 = 79,255.64/x
  3. Step 3: Cross multiply
    142,907.06x = 197,211.03 × 79,255.64
  4. Step 4: Simplify right side
    142,907.06x = 15,630,086,397.71
  5. Step 5: Solve for x
    x = 15,630,086,397.71/142,907.06
  6. Step 6: Final answer
    x = 109,372.39

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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.