Home / 105,600.86-145,729.31-57,202.90

Finding the Fourth Proportional to 105,600.86, 145,729.31 and 57,202.90

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Solution

The fourth proportional to 105,600.86, 145,729.31 and 57,202.90 is: 78,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,600.86 : 145,729.31 = 57,202.90 : x
  2. Step 2: Convert to fraction form
    105,600.86/145,729.31 = 57,202.90/x
  3. Step 3: Cross multiply
    105,600.86x = 145,729.31 × 57,202.90
  4. Step 4: Simplify right side
    105,600.86x = 8,336,139,147.00
  5. Step 5: Solve for x
    x = 8,336,139,147.00/105,600.86
  6. Step 6: Final answer
    x = 78,940.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.