Home / 139,581.64-209,369.76-39,742.48

Finding the Fourth Proportional to 139,581.64, 209,369.76 and 39,742.48

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Solution

The fourth proportional to 139,581.64, 209,369.76 and 39,742.48 is: 59,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,581.64 : 209,369.76 = 39,742.48 : x
  2. Step 2: Convert to fraction form
    139,581.64/209,369.76 = 39,742.48/x
  3. Step 3: Cross multiply
    139,581.64x = 209,369.76 × 39,742.48
  4. Step 4: Simplify right side
    139,581.64x = 8,320,873,499.40
  5. Step 5: Solve for x
    x = 8,320,873,499.40/139,581.64
  6. Step 6: Final answer
    x = 59,612.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.