Home / 105,533.10-145,634.23-57,786.45

Finding the Fourth Proportional to 105,533.10, 145,634.23 and 57,786.45

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Solution

The fourth proportional to 105,533.10, 145,634.23 and 57,786.45 is: 79,744.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,533.10 : 145,634.23 = 57,786.45 : x
  2. Step 2: Convert to fraction form
    105,533.10/145,634.23 = 57,786.45/x
  3. Step 3: Cross multiply
    105,533.10x = 145,634.23 × 57,786.45
  4. Step 4: Simplify right side
    105,533.10x = 8,415,685,150.18
  5. Step 5: Solve for x
    x = 8,415,685,150.18/105,533.10
  6. Step 6: Final answer
    x = 79,744.51

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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.