Home / 105,169.41-145,139.67-57,427.20

Finding the Fourth Proportional to 105,169.41, 145,139.67 and 57,427.20

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Solution

The fourth proportional to 105,169.41, 145,139.67 and 57,427.20 is: 79,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,169.41 : 145,139.67 = 57,427.20 : x
  2. Step 2: Convert to fraction form
    105,169.41/145,139.67 = 57,427.20/x
  3. Step 3: Cross multiply
    105,169.41x = 145,139.67 × 57,427.20
  4. Step 4: Simplify right side
    105,169.41x = 8,334,964,857.02
  5. Step 5: Solve for x
    x = 8,334,964,857.02/105,169.41
  6. Step 6: Final answer
    x = 79,252.75

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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.