Home / 103,685.38-143,089.05-58,976.26

Finding the Fourth Proportional to 103,685.38, 143,089.05 and 58,976.26

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Solution

The fourth proportional to 103,685.38, 143,089.05 and 58,976.26 is: 81,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,685.38 : 143,089.05 = 58,976.26 : x
  2. Step 2: Convert to fraction form
    103,685.38/143,089.05 = 58,976.26/x
  3. Step 3: Cross multiply
    103,685.38x = 143,089.05 × 58,976.26
  4. Step 4: Simplify right side
    103,685.38x = 8,438,857,015.95
  5. Step 5: Solve for x
    x = 8,438,857,015.95/103,685.38
  6. Step 6: Final answer
    x = 81,389.07

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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.