Home / 89,642,968.20-134,464,452.30-81,990,217.80

Finding the Fourth Proportional to 89,642,968.20, 134,464,452.30 and 81,990,217.80

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Solution

The fourth proportional to 89,642,968.20, 134,464,452.30 and 81,990,217.80 is: 122,985,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,642,968.20 : 134,464,452.30 = 81,990,217.80 : x
  2. Step 2: Convert to fraction form
    89,642,968.20/134,464,452.30 = 81,990,217.80/x
  3. Step 3: Cross multiply
    89,642,968.20x = 134,464,452.30 × 81,990,217.80
  4. Step 4: Simplify right side
    89,642,968.20x = 11,024,769,730,434,712
  5. Step 5: Solve for x
    x = 11,024,769,730,434,712/89,642,968.20
  6. Step 6: Final answer
    x = 122,985,326.70

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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.