Home / 123,971.45-171,077-70,261.43

Finding the Fourth Proportional to 123,971.45, 171,077 and 70,261.43

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Solution

The fourth proportional to 123,971.45, 171,077 and 70,261.43 is: 96,958.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,971.45 : 171,077 = 70,261.43 : x
  2. Step 2: Convert to fraction form
    123,971.45/171,077 = 70,261.43/x
  3. Step 3: Cross multiply
    123,971.45x = 171,077 × 70,261.43
  4. Step 4: Simplify right side
    123,971.45x = 12,020,113,804.73
  5. Step 5: Solve for x
    x = 12,020,113,804.73/123,971.45
  6. Step 6: Final answer
    x = 96,958.73

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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.