Home / 121,014,681.20-181,522,021.80-111,661,319.60

Finding the Fourth Proportional to 121,014,681.20, 181,522,021.80 and 111,661,319.60

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Solution

The fourth proportional to 121,014,681.20, 181,522,021.80 and 111,661,319.60 is: 167,491,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014,681.20 : 181,522,021.80 = 111,661,319.60 : x
  2. Step 2: Convert to fraction form
    121,014,681.20/181,522,021.80 = 111,661,319.60/x
  3. Step 3: Cross multiply
    121,014,681.20x = 181,522,021.80 × 111,661,319.60
  4. Step 4: Simplify right side
    121,014,681.20x = 20,268,988,490,647,968
  5. Step 5: Solve for x
    x = 20,268,988,490,647,968/121,014,681.20
  6. Step 6: Final answer
    x = 167,491,979.40

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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.