Home / 124,847,992.80-187,271,989.20-81,765,842.40

Finding the Fourth Proportional to 124,847,992.80, 187,271,989.20 and 81,765,842.40

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Solution

The fourth proportional to 124,847,992.80, 187,271,989.20 and 81,765,842.40 is: 122,648,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,847,992.80 : 187,271,989.20 = 81,765,842.40 : x
  2. Step 2: Convert to fraction form
    124,847,992.80/187,271,989.20 = 81,765,842.40/x
  3. Step 3: Cross multiply
    124,847,992.80x = 187,271,989.20 × 81,765,842.40
  4. Step 4: Simplify right side
    124,847,992.80x = 15,312,451,954,861,702
  5. Step 5: Solve for x
    x = 15,312,451,954,861,702/124,847,992.80
  6. Step 6: Final answer
    x = 122,648,763.60

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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.