Home / 123,777.10-170,812.56-67,188.52

Finding the Fourth Proportional to 123,777.10, 170,812.56 and 67,188.52

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Solution

The fourth proportional to 123,777.10, 170,812.56 and 67,188.52 is: 92,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,777.10 : 170,812.56 = 67,188.52 : x
  2. Step 2: Convert to fraction form
    123,777.10/170,812.56 = 67,188.52/x
  3. Step 3: Cross multiply
    123,777.10x = 170,812.56 × 67,188.52
  4. Step 4: Simplify right side
    123,777.10x = 11,476,643,103.81
  5. Step 5: Solve for x
    x = 11,476,643,103.81/123,777.10
  6. Step 6: Final answer
    x = 92,720.25

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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.