Home / 154,985,745.75-213,880,329.14-85,370,911.35

Finding the Fourth Proportional to 154,985,745.75, 213,880,329.14 and 85,370,911.35

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Solution

The fourth proportional to 154,985,745.75, 213,880,329.14 and 85,370,911.35 is: 117,811,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,985,745.75 : 213,880,329.14 = 85,370,911.35 : x
  2. Step 2: Convert to fraction form
    154,985,745.75/213,880,329.14 = 85,370,911.35/x
  3. Step 3: Cross multiply
    154,985,745.75x = 213,880,329.14 × 85,370,911.35
  4. Step 4: Simplify right side
    154,985,745.75x = 18,259,158,618,092,904
  5. Step 5: Solve for x
    x = 18,259,158,618,092,904/154,985,745.75
  6. Step 6: Final answer
    x = 117,811,857.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.