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Finding the Fourth Proportional to 103,689.63, 143,090.06 and 58,367.49

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Solution

The fourth proportional to 103,689.63, 143,090.06 and 58,367.49 is: 80,546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.63 : 143,090.06 = 58,367.49 : x
  2. Step 2: Convert to fraction form
    103,689.63/143,090.06 = 58,367.49/x
  3. Step 3: Cross multiply
    103,689.63x = 143,090.06 × 58,367.49
  4. Step 4: Simplify right side
    103,689.63x = 8,351,807,354.31
  5. Step 5: Solve for x
    x = 8,351,807,354.31/103,689.63
  6. Step 6: Final answer
    x = 80,546.22

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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.