Home / 180,743.56-249,419.32-100,172.45

Finding the Fourth Proportional to 180,743.56, 249,419.32 and 100,172.45

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Solution

The fourth proportional to 180,743.56, 249,419.32 and 100,172.45 is: 138,234.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,743.56 : 249,419.32 = 100,172.45 : x
  2. Step 2: Convert to fraction form
    180,743.56/249,419.32 = 100,172.45/x
  3. Step 3: Cross multiply
    180,743.56x = 249,419.32 × 100,172.45
  4. Step 4: Simplify right side
    180,743.56x = 24,984,944,734.85
  5. Step 5: Solve for x
    x = 24,984,944,734.85/180,743.56
  6. Step 6: Final answer
    x = 138,234.22

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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.