Home / 216,939.77-299,378.06-120,146.79

Finding the Fourth Proportional to 216,939.77, 299,378.06 and 120,146.79

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Solution

The fourth proportional to 216,939.77, 299,378.06 and 120,146.79 is: 165,803.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,939.77 : 299,378.06 = 120,146.79 : x
  2. Step 2: Convert to fraction form
    216,939.77/299,378.06 = 120,146.79/x
  3. Step 3: Cross multiply
    216,939.77x = 299,378.06 × 120,146.79
  4. Step 4: Simplify right side
    216,939.77x = 35,969,312,304.69
  5. Step 5: Solve for x
    x = 35,969,312,304.69/216,939.77
  6. Step 6: Final answer
    x = 165,803.22

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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.