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Finding the Fourth Proportional to 173,843,138.40, 260,764,707.60 and 145,783,053.60

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Solution

The fourth proportional to 173,843,138.40, 260,764,707.60 and 145,783,053.60 is: 218,674,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,843,138.40 : 260,764,707.60 = 145,783,053.60 : x
  2. Step 2: Convert to fraction form
    173,843,138.40/260,764,707.60 = 145,783,053.60/x
  3. Step 3: Cross multiply
    173,843,138.40x = 260,764,707.60 × 145,783,053.60
  4. Step 4: Simplify right side
    173,843,138.40x = 38,015,075,345,039,128
  5. Step 5: Solve for x
    x = 38,015,075,345,039,128/173,843,138.40
  6. Step 6: Final answer
    x = 218,674,580.40

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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.