Home / 103,722.68-143,141.83-58,400.65

Finding the Fourth Proportional to 103,722.68, 143,141.83 and 58,400.65

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Solution

The fourth proportional to 103,722.68, 143,141.83 and 58,400.65 is: 80,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,722.68 : 143,141.83 = 58,400.65 : x
  2. Step 2: Convert to fraction form
    103,722.68/143,141.83 = 58,400.65/x
  3. Step 3: Cross multiply
    103,722.68x = 143,141.83 × 58,400.65
  4. Step 4: Simplify right side
    103,722.68x = 8,359,576,327.81
  5. Step 5: Solve for x
    x = 8,359,576,327.81/103,722.68
  6. Step 6: Final answer
    x = 80,595.45

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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.