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Finding the Fourth Proportional to 103,012.64, 154,520.40 and 29,140.64

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Solution

The fourth proportional to 103,012.64, 154,520.40 and 29,140.64 is: 43,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,012.64 : 154,520.40 = 29,140.64 : x
  2. Step 2: Convert to fraction form
    103,012.64/154,520.40 = 29,140.64/x
  3. Step 3: Cross multiply
    103,012.64x = 154,520.40 × 29,140.64
  4. Step 4: Simplify right side
    103,012.64x = 4,502,823,349.06
  5. Step 5: Solve for x
    x = 4,502,823,349.06/103,012.64
  6. Step 6: Final answer
    x = 43,711.37

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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.