Home / 105,161.14-145,116.84-57,405.25

Finding the Fourth Proportional to 105,161.14, 145,116.84 and 57,405.25

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Solution

The fourth proportional to 105,161.14, 145,116.84 and 57,405.25 is: 79,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,161.14 : 145,116.84 = 57,405.25 : x
  2. Step 2: Convert to fraction form
    105,161.14/145,116.84 = 57,405.25/x
  3. Step 3: Cross multiply
    105,161.14x = 145,116.84 × 57,405.25
  4. Step 4: Simplify right side
    105,161.14x = 8,330,468,479.41
  5. Step 5: Solve for x
    x = 8,330,468,479.41/105,161.14
  6. Step 6: Final answer
    x = 79,216.22

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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.