Home / 216,728.25-299,145.09-126,101.72

Finding the Fourth Proportional to 216,728.25, 299,145.09 and 126,101.72

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Solution

The fourth proportional to 216,728.25, 299,145.09 and 126,101.72 is: 174,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,728.25 : 299,145.09 = 126,101.72 : x
  2. Step 2: Convert to fraction form
    216,728.25/299,145.09 = 126,101.72/x
  3. Step 3: Cross multiply
    216,728.25x = 299,145.09 × 126,101.72
  4. Step 4: Simplify right side
    216,728.25x = 37,722,710,378.55
  5. Step 5: Solve for x
    x = 37,722,710,378.55/216,728.25
  6. Step 6: Final answer
    x = 174,055.35

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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.