Home / 642,068,821.20-963,103,231.80-157,394,629.20

Finding the Fourth Proportional to 642,068,821.20, 963,103,231.80 and 157,394,629.20

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Solution

The fourth proportional to 642,068,821.20, 963,103,231.80 and 157,394,629.20 is: 236,091,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,068,821.20 : 963,103,231.80 = 157,394,629.20 : x
  2. Step 2: Convert to fraction form
    642,068,821.20/963,103,231.80 = 157,394,629.20/x
  3. Step 3: Cross multiply
    642,068,821.20x = 963,103,231.80 × 157,394,629.20
  4. Step 4: Simplify right side
    642,068,821.20x = 151,587,276,050,482,624
  5. Step 5: Solve for x
    x = 151,587,276,050,482,624/642,068,821.20
  6. Step 6: Final answer
    x = 236,091,943.80

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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.