Home / 105,181.23-145,153.58-57,438.21

Finding the Fourth Proportional to 105,181.23, 145,153.58 and 57,438.21

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Solution

The fourth proportional to 105,181.23, 145,153.58 and 57,438.21 is: 79,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,181.23 : 145,153.58 = 57,438.21 : x
  2. Step 2: Convert to fraction form
    105,181.23/145,153.58 = 57,438.21/x
  3. Step 3: Cross multiply
    105,181.23x = 145,153.58 × 57,438.21
  4. Step 4: Simplify right side
    105,181.23x = 8,337,361,523.10
  5. Step 5: Solve for x
    x = 8,337,361,523.10/105,181.23
  6. Step 6: Final answer
    x = 79,266.63

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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.