Home / 103,180.09-142,378.62-57,859.98

Finding the Fourth Proportional to 103,180.09, 142,378.62 and 57,859.98

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Solution

The fourth proportional to 103,180.09, 142,378.62 and 57,859.98 is: 79,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,180.09 : 142,378.62 = 57,859.98 : x
  2. Step 2: Convert to fraction form
    103,180.09/142,378.62 = 57,859.98/x
  3. Step 3: Cross multiply
    103,180.09x = 142,378.62 × 57,859.98
  4. Step 4: Simplify right side
    103,180.09x = 8,238,024,105.63
  5. Step 5: Solve for x
    x = 8,238,024,105.63/103,180.09
  6. Step 6: Final answer
    x = 79,841.22

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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.