Home / 121,121.36-181,689.72-38,018.64

Finding the Fourth Proportional to 121,121.36, 181,689.72 and 38,018.64

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Solution

The fourth proportional to 121,121.36, 181,689.72 and 38,018.64 is: 57,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,121.36 : 181,689.72 = 38,018.64 : x
  2. Step 2: Convert to fraction form
    121,121.36/181,689.72 = 38,018.64/x
  3. Step 3: Cross multiply
    121,121.36x = 181,689.72 × 38,018.64
  4. Step 4: Simplify right side
    121,121.36x = 6,907,596,056.38
  5. Step 5: Solve for x
    x = 6,907,596,056.38/121,121.36
  6. Step 6: Final answer
    x = 57,030.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.