Home / 126,230,911.40-189,235,775.10-85,710,002.60

Finding the Fourth Proportional to 126,230,911.40, 189,235,775.10 and 85,710,002.60

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Solution

The fourth proportional to 126,230,911.40, 189,235,775.10 and 85,710,002.60 is: 128,489,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,230,911.40 : 189,235,775.10 = 85,710,002.60 : x
  2. Step 2: Convert to fraction form
    126,230,911.40/189,235,775.10 = 85,710,002.60/x
  3. Step 3: Cross multiply
    126,230,911.40x = 189,235,775.10 × 85,710,002.60
  4. Step 4: Simplify right side
    126,230,911.40x = 16,219,398,775,834,014
  5. Step 5: Solve for x
    x = 16,219,398,775,834,014/126,230,911.40
  6. Step 6: Final answer
    x = 128,489,912.62

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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.