Home / 103,784.56-143,212.98-61,334.80

Finding the Fourth Proportional to 103,784.56, 143,212.98 and 61,334.80

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Solution

The fourth proportional to 103,784.56, 143,212.98 and 61,334.80 is: 84,636.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,784.56 : 143,212.98 = 61,334.80 : x
  2. Step 2: Convert to fraction form
    103,784.56/143,212.98 = 61,334.80/x
  3. Step 3: Cross multiply
    103,784.56x = 143,212.98 × 61,334.80
  4. Step 4: Simplify right side
    103,784.56x = 8,783,939,485.70
  5. Step 5: Solve for x
    x = 8,783,939,485.70/103,784.56
  6. Step 6: Final answer
    x = 84,636.28

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1.5x scale

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.