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Finding the Fourth Proportional to 121,314,943.20, 181,972,414.80 and 121,314,943.20

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Solution

The fourth proportional to 121,314,943.20, 181,972,414.80 and 121,314,943.20 is: 181,972,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314,943.20 : 181,972,414.80 = 121,314,943.20 : x
  2. Step 2: Convert to fraction form
    121,314,943.20/181,972,414.80 = 121,314,943.20/x
  3. Step 3: Cross multiply
    121,314,943.20x = 181,972,414.80 × 121,314,943.20
  4. Step 4: Simplify right side
    121,314,943.20x = 22,075,973,165,428,840
  5. Step 5: Solve for x
    x = 22,075,973,165,428,840/121,314,943.20
  6. Step 6: Final answer
    x = 181,972,414.80

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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.