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Finding the Fourth Proportional to 124,471.99, 171,745.57 and 72,779.14

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Solution

The fourth proportional to 124,471.99, 171,745.57 and 72,779.14 is: 100,420.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,471.99 : 171,745.57 = 72,779.14 : x
  2. Step 2: Convert to fraction form
    124,471.99/171,745.57 = 72,779.14/x
  3. Step 3: Cross multiply
    124,471.99x = 171,745.57 × 72,779.14
  4. Step 4: Simplify right side
    124,471.99x = 12,499,494,883.41
  5. Step 5: Solve for x
    x = 12,499,494,883.41/124,471.99
  6. Step 6: Final answer
    x = 100,420.14

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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.