Home / 123,309.14-170,166.60-66,720.50

Finding the Fourth Proportional to 123,309.14, 170,166.60 and 66,720.50

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Solution

The fourth proportional to 123,309.14, 170,166.60 and 66,720.50 is: 92,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,309.14 : 170,166.60 = 66,720.50 : x
  2. Step 2: Convert to fraction form
    123,309.14/170,166.60 = 66,720.50/x
  3. Step 3: Cross multiply
    123,309.14x = 170,166.60 × 66,720.50
  4. Step 4: Simplify right side
    123,309.14x = 11,353,600,635.30
  5. Step 5: Solve for x
    x = 11,353,600,635.30/123,309.14
  6. Step 6: Final answer
    x = 92,074.28

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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.