Home / 105,127.58-145,071.99-57,380.91

Finding the Fourth Proportional to 105,127.58, 145,071.99 and 57,380.91

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Solution

The fourth proportional to 105,127.58, 145,071.99 and 57,380.91 is: 79,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,127.58 : 145,071.99 = 57,380.91 : x
  2. Step 2: Convert to fraction form
    105,127.58/145,071.99 = 57,380.91/x
  3. Step 3: Cross multiply
    105,127.58x = 145,071.99 × 57,380.91
  4. Step 4: Simplify right side
    105,127.58x = 8,324,362,801.71
  5. Step 5: Solve for x
    x = 8,324,362,801.71/105,127.58
  6. Step 6: Final answer
    x = 79,183.44

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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.