Home / 115,919,999.40-173,879,999.10-81,907,775.40

Finding the Fourth Proportional to 115,919,999.40, 173,879,999.10 and 81,907,775.40

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Solution

The fourth proportional to 115,919,999.40, 173,879,999.10 and 81,907,775.40 is: 122,861,663.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919,999.40 : 173,879,999.10 = 81,907,775.40 : x
  2. Step 2: Convert to fraction form
    115,919,999.40/173,879,999.10 = 81,907,775.40/x
  3. Step 3: Cross multiply
    115,919,999.40x = 173,879,999.10 × 81,907,775.40
  4. Step 4: Simplify right side
    115,919,999.40x = 14,242,123,912,835,002
  5. Step 5: Solve for x
    x = 14,242,123,912,835,002/115,919,999.40
  6. Step 6: Final answer
    x = 122,861,663.10

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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.