Home / 123,200.72-170,016.53-69,485.40

Finding the Fourth Proportional to 123,200.72, 170,016.53 and 69,485.40

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Solution

The fourth proportional to 123,200.72, 170,016.53 and 69,485.40 is: 95,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,200.72 : 170,016.53 = 69,485.40 : x
  2. Step 2: Convert to fraction form
    123,200.72/170,016.53 = 69,485.40/x
  3. Step 3: Cross multiply
    123,200.72x = 170,016.53 × 69,485.40
  4. Step 4: Simplify right side
    123,200.72x = 11,813,666,593.66
  5. Step 5: Solve for x
    x = 11,813,666,593.66/123,200.72
  6. Step 6: Final answer
    x = 95,889.59

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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.