Home / 81,503,138.40-122,254,707.60-73,440,981.60

Finding the Fourth Proportional to 81,503,138.40, 122,254,707.60 and 73,440,981.60

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Solution

The fourth proportional to 81,503,138.40, 122,254,707.60 and 73,440,981.60 is: 110,161,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503,138.40 : 122,254,707.60 = 73,440,981.60 : x
  2. Step 2: Convert to fraction form
    81,503,138.40/122,254,707.60 = 73,440,981.60/x
  3. Step 3: Cross multiply
    81,503,138.40x = 122,254,707.60 × 73,440,981.60
  4. Step 4: Simplify right side
    81,503,138.40x = 8,978,505,731,364,979
  5. Step 5: Solve for x
    x = 8,978,505,731,364,979/81,503,138.40
  6. Step 6: Final answer
    x = 110,161,472.40

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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.