Home / 100,317.24-138,449.30-57,303.50

Finding the Fourth Proportional to 100,317.24, 138,449.30 and 57,303.50

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Solution

The fourth proportional to 100,317.24, 138,449.30 and 57,303.50 is: 79,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,317.24 : 138,449.30 = 57,303.50 : x
  2. Step 2: Convert to fraction form
    100,317.24/138,449.30 = 57,303.50/x
  3. Step 3: Cross multiply
    100,317.24x = 138,449.30 × 57,303.50
  4. Step 4: Simplify right side
    100,317.24x = 7,933,629,462.55
  5. Step 5: Solve for x
    x = 7,933,629,462.55/100,317.24
  6. Step 6: Final answer
    x = 79,085.40

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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.