Home / 121,278,007.20-181,917,010.80-111,924,645.60

Finding the Fourth Proportional to 121,278,007.20, 181,917,010.80 and 111,924,645.60

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Solution

The fourth proportional to 121,278,007.20, 181,917,010.80 and 111,924,645.60 is: 167,886,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278,007.20 : 181,917,010.80 = 111,924,645.60 : x
  2. Step 2: Convert to fraction form
    121,278,007.20/181,917,010.80 = 111,924,645.60/x
  3. Step 3: Cross multiply
    121,278,007.20x = 181,917,010.80 × 111,924,645.60
  4. Step 4: Simplify right side
    121,278,007.20x = 20,360,996,962,401,372
  5. Step 5: Solve for x
    x = 20,360,996,962,401,372/121,278,007.20
  6. Step 6: Final answer
    x = 167,886,968.40

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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.