Home / 142,400.61-213,414.07-104,784.55

Finding the Fourth Proportional to 142,400.61, 213,414.07 and 104,784.55

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Solution

The fourth proportional to 142,400.61, 213,414.07 and 104,784.55 is: 157,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,400.61 : 213,414.07 = 104,784.55 : x
  2. Step 2: Convert to fraction form
    142,400.61/213,414.07 = 104,784.55/x
  3. Step 3: Cross multiply
    142,400.61x = 213,414.07 × 104,784.55
  4. Step 4: Simplify right side
    142,400.61x = 22,362,496,221.55
  5. Step 5: Solve for x
    x = 22,362,496,221.55/142,400.61
  6. Step 6: Final answer
    x = 157,039.33

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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.