Home / 103,819.88-143,261.70-58,490.39

Finding the Fourth Proportional to 103,819.88, 143,261.70 and 58,490.39

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Solution

The fourth proportional to 103,819.88, 143,261.70 and 58,490.39 is: 80,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,819.88 : 143,261.70 = 58,490.39 : x
  2. Step 2: Convert to fraction form
    103,819.88/143,261.70 = 58,490.39/x
  3. Step 3: Cross multiply
    103,819.88x = 143,261.70 × 58,490.39
  4. Step 4: Simplify right side
    103,819.88x = 8,379,431,988.75
  5. Step 5: Solve for x
    x = 8,379,431,988.75/103,819.88
  6. Step 6: Final answer
    x = 80,711.25

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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.