Home / 99,804,980.35-149,483,521.72-81,889,076.35

Finding the Fourth Proportional to 99,804,980.35, 149,483,521.72 and 81,889,076.35

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Solution

The fourth proportional to 99,804,980.35, 149,483,521.72 and 81,889,076.35 is: 122,649,866.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,804,980.35 : 149,483,521.72 = 81,889,076.35 : x
  2. Step 2: Convert to fraction form
    99,804,980.35/149,483,521.72 = 81,889,076.35/x
  3. Step 3: Cross multiply
    99,804,980.35x = 149,483,521.72 × 81,889,076.35
  4. Step 4: Simplify right side
    99,804,980.35x = 12,241,067,523,195,962
  5. Step 5: Solve for x
    x = 12,241,067,523,195,962/99,804,980.35
  6. Step 6: Final answer
    x = 122,649,866.57

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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.