Home / 208,529,431.20-312,906,121.20-87,373,130.40

Finding the Fourth Proportional to 208,529,431.20, 312,906,121.20 and 87,373,130.40

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Solution

The fourth proportional to 208,529,431.20, 312,906,121.20 and 87,373,130.40 is: 131,106,612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,529,431.20 : 312,906,121.20 = 87,373,130.40 : x
  2. Step 2: Convert to fraction form
    208,529,431.20/312,906,121.20 = 87,373,130.40/x
  3. Step 3: Cross multiply
    208,529,431.20x = 312,906,121.20 × 87,373,130.40
  4. Step 4: Simplify right side
    208,529,431.20x = 27,339,587,330,565,804
  5. Step 5: Solve for x
    x = 27,339,587,330,565,804/208,529,431.20
  6. Step 6: Final answer
    x = 131,106,612.50

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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.