Home / 104,143.04-143,739.78-67,889.78

Finding the Fourth Proportional to 104,143.04, 143,739.78 and 67,889.78

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Solution

The fourth proportional to 104,143.04, 143,739.78 and 67,889.78 is: 93,702.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,143.04 : 143,739.78 = 67,889.78 : x
  2. Step 2: Convert to fraction form
    104,143.04/143,739.78 = 67,889.78/x
  3. Step 3: Cross multiply
    104,143.04x = 143,739.78 × 67,889.78
  4. Step 4: Simplify right side
    104,143.04x = 9,758,462,041.45
  5. Step 5: Solve for x
    x = 9,758,462,041.45/104,143.04
  6. Step 6: Final answer
    x = 93,702.49

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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.