Home / 124,728.06-172,122.09-71,012.31

Finding the Fourth Proportional to 124,728.06, 172,122.09 and 71,012.31

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Solution

The fourth proportional to 124,728.06, 172,122.09 and 71,012.31 is: 97,995.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.06 : 172,122.09 = 71,012.31 : x
  2. Step 2: Convert to fraction form
    124,728.06/172,122.09 = 71,012.31/x
  3. Step 3: Cross multiply
    124,728.06x = 172,122.09 × 71,012.31
  4. Step 4: Simplify right side
    124,728.06x = 12,222,787,212.93
  5. Step 5: Solve for x
    x = 12,222,787,212.93/124,728.06
  6. Step 6: Final answer
    x = 97,995.49

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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.