Home / 121,128,091.20-181,692,136.80-111,774,729.60

Finding the Fourth Proportional to 121,128,091.20, 181,692,136.80 and 111,774,729.60

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Solution

The fourth proportional to 121,128,091.20, 181,692,136.80 and 111,774,729.60 is: 167,662,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128,091.20 : 181,692,136.80 = 111,774,729.60 : x
  2. Step 2: Convert to fraction form
    121,128,091.20/181,692,136.80 = 111,774,729.60/x
  3. Step 3: Cross multiply
    121,128,091.20x = 181,692,136.80 × 111,774,729.60
  4. Step 4: Simplify right side
    121,128,091.20x = 20,308,589,461,266,208
  5. Step 5: Solve for x
    x = 20,308,589,461,266,208/121,128,091.20
  6. Step 6: Final answer
    x = 167,662,094.40

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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.