Home / 121,127,443.20-181,691,164.80-111,774,081.60

Finding the Fourth Proportional to 121,127,443.20, 181,691,164.80 and 111,774,081.60

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Solution

The fourth proportional to 121,127,443.20, 181,691,164.80 and 111,774,081.60 is: 167,661,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,127,443.20 : 181,691,164.80 = 111,774,081.60 : x
  2. Step 2: Convert to fraction form
    121,127,443.20/181,691,164.80 = 111,774,081.60/x
  3. Step 3: Cross multiply
    121,127,443.20x = 181,691,164.80 × 111,774,081.60
  4. Step 4: Simplify right side
    121,127,443.20x = 20,308,363,080,354,248
  5. Step 5: Solve for x
    x = 20,308,363,080,354,248/121,127,443.20
  6. Step 6: Final answer
    x = 167,661,122.40

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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.