Home / 154,009,281.03-212,543,235.32-87,004,999.98

Finding the Fourth Proportional to 154,009,281.03, 212,543,235.32 and 87,004,999.98

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Solution

The fourth proportional to 154,009,281.03, 212,543,235.32 and 87,004,999.98 is: 120,072,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,009,281.03 : 212,543,235.32 = 87,004,999.98 : x
  2. Step 2: Convert to fraction form
    154,009,281.03/212,543,235.32 = 87,004,999.98/x
  3. Step 3: Cross multiply
    154,009,281.03x = 212,543,235.32 × 87,004,999.98
  4. Step 4: Simplify right side
    154,009,281.03x = 18,492,324,183,977,308
  5. Step 5: Solve for x
    x = 18,492,324,183,977,308/154,009,281.03
  6. Step 6: Final answer
    x = 120,072,790.81

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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.