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Finding the Fourth Proportional to 103,134.63, 154,721.40 and 73,478.91

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Solution

The fourth proportional to 103,134.63, 154,721.40 and 73,478.91 is: 110,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,134.63 : 154,721.40 = 73,478.91 : x
  2. Step 2: Convert to fraction form
    103,134.63/154,721.40 = 73,478.91/x
  3. Step 3: Cross multiply
    103,134.63x = 154,721.40 × 73,478.91
  4. Step 4: Simplify right side
    103,134.63x = 11,368,759,825.67
  5. Step 5: Solve for x
    x = 11,368,759,825.67/103,134.63
  6. Step 6: Final answer
    x = 110,232.23

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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.