Home / 180,976.93-249,749.67-100,409.74

Finding the Fourth Proportional to 180,976.93, 249,749.67 and 100,409.74

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Solution

The fourth proportional to 180,976.93, 249,749.67 and 100,409.74 is: 138,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,976.93 : 249,749.67 = 100,409.74 : x
  2. Step 2: Convert to fraction form
    180,976.93/249,749.67 = 100,409.74/x
  3. Step 3: Cross multiply
    180,976.93x = 249,749.67 × 100,409.74
  4. Step 4: Simplify right side
    180,976.93x = 25,077,299,429.79
  5. Step 5: Solve for x
    x = 25,077,299,429.79/180,976.93
  6. Step 6: Final answer
    x = 138,566.28

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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.