Home / 104,178.83-143,777.43-75,131.19

Finding the Fourth Proportional to 104,178.83, 143,777.43 and 75,131.19

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Solution

The fourth proportional to 104,178.83, 143,777.43 and 75,131.19 is: 103,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,178.83 : 143,777.43 = 75,131.19 : x
  2. Step 2: Convert to fraction form
    104,178.83/143,777.43 = 75,131.19/x
  3. Step 3: Cross multiply
    104,178.83x = 143,777.43 × 75,131.19
  4. Step 4: Simplify right side
    104,178.83x = 10,802,169,411.04
  5. Step 5: Solve for x
    x = 10,802,169,411.04/104,178.83
  6. Step 6: Final answer
    x = 103,688.72

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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.