Home / 180,909.05-249,669.78-100,362.50

Finding the Fourth Proportional to 180,909.05, 249,669.78 and 100,362.50

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Solution

The fourth proportional to 180,909.05, 249,669.78 and 100,362.50 is: 138,508.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,909.05 : 249,669.78 = 100,362.50 : x
  2. Step 2: Convert to fraction form
    180,909.05/249,669.78 = 100,362.50/x
  3. Step 3: Cross multiply
    180,909.05x = 249,669.78 × 100,362.50
  4. Step 4: Simplify right side
    180,909.05x = 25,057,483,295.25
  5. Step 5: Solve for x
    x = 25,057,483,295.25/180,909.05
  6. Step 6: Final answer
    x = 138,508.73

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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.