Home / 81,656,246.80-122,484,370.20-81,089,376.40

Finding the Fourth Proportional to 81,656,246.80, 122,484,370.20 and 81,089,376.40

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Solution

The fourth proportional to 81,656,246.80, 122,484,370.20 and 81,089,376.40 is: 121,634,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656,246.80 : 122,484,370.20 = 81,089,376.40 : x
  2. Step 2: Convert to fraction form
    81,656,246.80/122,484,370.20 = 81,089,376.40/x
  3. Step 3: Cross multiply
    81,656,246.80x = 122,484,370.20 × 81,089,376.40
  4. Step 4: Simplify right side
    81,656,246.80x = 9,932,181,198,264,744
  5. Step 5: Solve for x
    x = 9,932,181,198,264,744/81,656,246.80
  6. Step 6: Final answer
    x = 121,634,064.60

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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.