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Finding the Fourth Proportional to 103,145.60, 154,726.40 and 43,981.68

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Solution

The fourth proportional to 103,145.60, 154,726.40 and 43,981.68 is: 65,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,145.60 : 154,726.40 = 43,981.68 : x
  2. Step 2: Convert to fraction form
    103,145.60/154,726.40 = 43,981.68/x
  3. Step 3: Cross multiply
    103,145.60x = 154,726.40 × 43,981.68
  4. Step 4: Simplify right side
    103,145.60x = 6,805,127,012.35
  5. Step 5: Solve for x
    x = 6,805,127,012.35/103,145.60
  6. Step 6: Final answer
    x = 65,975.93

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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.