Home / 126,230,811.40-189,235,625.10-85,709,902.60

Finding the Fourth Proportional to 126,230,811.40, 189,235,625.10 and 85,709,902.60

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Solution

The fourth proportional to 126,230,811.40, 189,235,625.10 and 85,709,902.60 is: 128,489,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,230,811.40 : 189,235,625.10 = 85,709,902.60 : x
  2. Step 2: Convert to fraction form
    126,230,811.40/189,235,625.10 = 85,709,902.60/x
  3. Step 3: Cross multiply
    126,230,811.40x = 189,235,625.10 × 85,709,902.60
  4. Step 4: Simplify right side
    126,230,811.40x = 16,219,366,995,771,114
  5. Step 5: Solve for x
    x = 16,219,366,995,771,114/126,230,811.40
  6. Step 6: Final answer
    x = 128,489,762.65

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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.