Home / 105,107.75-145,051.77-57,364.16

Finding the Fourth Proportional to 105,107.75, 145,051.77 and 57,364.16

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Solution

The fourth proportional to 105,107.75, 145,051.77 and 57,364.16 is: 79,164.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,107.75 : 145,051.77 = 57,364.16 : x
  2. Step 2: Convert to fraction form
    105,107.75/145,051.77 = 57,364.16/x
  3. Step 3: Cross multiply
    105,107.75x = 145,051.77 × 57,364.16
  4. Step 4: Simplify right side
    105,107.75x = 8,320,772,942.56
  5. Step 5: Solve for x
    x = 8,320,772,942.56/105,107.75
  6. Step 6: Final answer
    x = 79,164.22

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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.