Home / 123,501.36-170,430.76-66,912.60

Finding the Fourth Proportional to 123,501.36, 170,430.76 and 66,912.60

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Solution

The fourth proportional to 123,501.36, 170,430.76 and 66,912.60 is: 92,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,501.36 : 170,430.76 = 66,912.60 : x
  2. Step 2: Convert to fraction form
    123,501.36/170,430.76 = 66,912.60/x
  3. Step 3: Cross multiply
    123,501.36x = 170,430.76 × 66,912.60
  4. Step 4: Simplify right side
    123,501.36x = 11,403,965,271.58
  5. Step 5: Solve for x
    x = 11,403,965,271.58/123,501.36
  6. Step 6: Final answer
    x = 92,338.78

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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.