Home / 280,130.04-420,194.79-102,650.94

Finding the Fourth Proportional to 280,130.04, 420,194.79 and 102,650.94

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Solution

The fourth proportional to 280,130.04, 420,194.79 and 102,650.94 is: 153,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,130.04 : 420,194.79 = 102,650.94 : x
  2. Step 2: Convert to fraction form
    280,130.04/420,194.79 = 102,650.94/x
  3. Step 3: Cross multiply
    280,130.04x = 420,194.79 × 102,650.94
  4. Step 4: Simplify right side
    280,130.04x = 43,133,390,176.60
  5. Step 5: Solve for x
    x = 43,133,390,176.60/280,130.04
  6. Step 6: Final answer
    x = 153,976.31

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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.