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Finding the Fourth Proportional to 121,278,679.80, 181,918,019.70 and 35,019,900.60

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Solution

The fourth proportional to 121,278,679.80, 181,918,019.70 and 35,019,900.60 is: 52,529,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278,679.80 : 181,918,019.70 = 35,019,900.60 : x
  2. Step 2: Convert to fraction form
    121,278,679.80/181,918,019.70 = 35,019,900.60/x
  3. Step 3: Cross multiply
    121,278,679.80x = 181,918,019.70 × 35,019,900.60
  4. Step 4: Simplify right side
    121,278,679.80x = 6,370,750,967,242,842
  5. Step 5: Solve for x
    x = 6,370,750,967,242,842/121,278,679.80
  6. Step 6: Final answer
    x = 52,529,850.90

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1.5x scale

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.