Home / 103,216.87-142,431.96-57,278.98

Finding the Fourth Proportional to 103,216.87, 142,431.96 and 57,278.98

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Solution

The fourth proportional to 103,216.87, 142,431.96 and 57,278.98 is: 79,040.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.87 : 142,431.96 = 57,278.98 : x
  2. Step 2: Convert to fraction form
    103,216.87/142,431.96 = 57,278.98/x
  3. Step 3: Cross multiply
    103,216.87x = 142,431.96 × 57,278.98
  4. Step 4: Simplify right side
    103,216.87x = 8,158,356,657.66
  5. Step 5: Solve for x
    x = 8,158,356,657.66/103,216.87
  6. Step 6: Final answer
    x = 79,040.93

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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.