Home / 171,072,078.20-256,608,117.30-105,315,111.80

Finding the Fourth Proportional to 171,072,078.20, 256,608,117.30 and 105,315,111.80

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Solution

The fourth proportional to 171,072,078.20, 256,608,117.30 and 105,315,111.80 is: 157,972,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,072,078.20 : 256,608,117.30 = 105,315,111.80 : x
  2. Step 2: Convert to fraction form
    171,072,078.20/256,608,117.30 = 105,315,111.80/x
  3. Step 3: Cross multiply
    171,072,078.20x = 256,608,117.30 × 105,315,111.80
  4. Step 4: Simplify right side
    171,072,078.20x = 27,024,712,562,237,016
  5. Step 5: Solve for x
    x = 27,024,712,562,237,016/171,072,078.20
  6. Step 6: Final answer
    x = 157,972,667.70

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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.