Home / 81,651,999.70-122,477,999.55-67,291,282.90

Finding the Fourth Proportional to 81,651,999.70, 122,477,999.55 and 67,291,282.90

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Solution

The fourth proportional to 81,651,999.70, 122,477,999.55 and 67,291,282.90 is: 100,936,924.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,651,999.70 : 122,477,999.55 = 67,291,282.90 : x
  2. Step 2: Convert to fraction form
    81,651,999.70/122,477,999.55 = 67,291,282.90/x
  3. Step 3: Cross multiply
    81,651,999.70x = 122,477,999.55 × 67,291,282.90
  4. Step 4: Simplify right side
    81,651,999.70x = 8,241,701,716,745,123
  5. Step 5: Solve for x
    x = 8,241,701,716,745,123/81,651,999.70
  6. Step 6: Final answer
    x = 100,936,924.35

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1.5x scale

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.