Home / 121,931,975.37-168,266,292.65-66,177,396.64

Finding the Fourth Proportional to 121,931,975.37, 168,266,292.65 and 66,177,396.64

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Solution

The fourth proportional to 121,931,975.37, 168,266,292.65 and 66,177,396.64 is: 91,324,897.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,975.37 : 168,266,292.65 = 66,177,396.64 : x
  2. Step 2: Convert to fraction form
    121,931,975.37/168,266,292.65 = 66,177,396.64/x
  3. Step 3: Cross multiply
    121,931,975.37x = 168,266,292.65 × 66,177,396.64
  4. Step 4: Simplify right side
    121,931,975.37x = 11,135,425,189,089,816
  5. Step 5: Solve for x
    x = 11,135,425,189,089,816/121,931,975.37
  6. Step 6: Final answer
    x = 91,324,897.80

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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.