Home / 147,940.20-221,472.90-139,289.40

Finding the Fourth Proportional to 147,940.20, 221,472.90 and 139,289.40

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Solution

The fourth proportional to 147,940.20, 221,472.90 and 139,289.40 is: 208,522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,940.20 : 221,472.90 = 139,289.40 : x
  2. Step 2: Convert to fraction form
    147,940.20/221,472.90 = 139,289.40/x
  3. Step 3: Cross multiply
    147,940.20x = 221,472.90 × 139,289.40
  4. Step 4: Simplify right side
    147,940.20x = 30,848,827,357.26
  5. Step 5: Solve for x
    x = 30,848,827,357.26/147,940.20
  6. Step 6: Final answer
    x = 208,522.28

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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.