Home / 103,145.74-154,726.53-43,981.72

Finding the Fourth Proportional to 103,145.74, 154,726.53 and 43,981.72

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Solution

The fourth proportional to 103,145.74, 154,726.53 and 43,981.72 is: 65,975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,145.74 : 154,726.53 = 43,981.72 : x
  2. Step 2: Convert to fraction form
    103,145.74/154,726.53 = 43,981.72/x
  3. Step 3: Cross multiply
    103,145.74x = 154,726.53 × 43,981.72
  4. Step 4: Simplify right side
    103,145.74x = 6,805,138,919.03
  5. Step 5: Solve for x
    x = 6,805,138,919.03/103,145.74
  6. Step 6: Final answer
    x = 65,975.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.