Home / 105,080.09-145,010.93-57,334.50

Finding the Fourth Proportional to 105,080.09, 145,010.93 and 57,334.50

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Solution

The fourth proportional to 105,080.09, 145,010.93 and 57,334.50 is: 79,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,080.09 : 145,010.93 = 57,334.50 : x
  2. Step 2: Convert to fraction form
    105,080.09/145,010.93 = 57,334.50/x
  3. Step 3: Cross multiply
    105,080.09x = 145,010.93 × 57,334.50
  4. Step 4: Simplify right side
    105,080.09x = 8,314,128,879.41
  5. Step 5: Solve for x
    x = 8,314,128,879.41/105,080.09
  6. Step 6: Final answer
    x = 79,121.83

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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.