Home / 180,890-249,628.20-100,329.86

Finding the Fourth Proportional to 180,890, 249,628.20 and 100,329.86

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Solution

The fourth proportional to 180,890, 249,628.20 and 100,329.86 is: 138,455.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,890 : 249,628.20 = 100,329.86 : x
  2. Step 2: Convert to fraction form
    180,890/249,628.20 = 100,329.86/x
  3. Step 3: Cross multiply
    180,890x = 249,628.20 × 100,329.86
  4. Step 4: Simplify right side
    180,890x = 25,045,162,358.05
  5. Step 5: Solve for x
    x = 25,045,162,358.05/180,890
  6. Step 6: Final answer
    x = 138,455.21

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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.