Home / 105,085.28-145,014.88-57,338.60

Finding the Fourth Proportional to 105,085.28, 145,014.88 and 57,338.60

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Solution

The fourth proportional to 105,085.28, 145,014.88 and 57,338.60 is: 79,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,085.28 : 145,014.88 = 57,338.60 : x
  2. Step 2: Convert to fraction form
    105,085.28/145,014.88 = 57,338.60/x
  3. Step 3: Cross multiply
    105,085.28x = 145,014.88 × 57,338.60
  4. Step 4: Simplify right side
    105,085.28x = 8,314,950,198.37
  5. Step 5: Solve for x
    x = 8,314,950,198.37/105,085.28
  6. Step 6: Final answer
    x = 79,125.74

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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.