Home / 103,690.02-143,092.21-58,978.02

Finding the Fourth Proportional to 103,690.02, 143,092.21 and 58,978.02

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Solution

The fourth proportional to 103,690.02, 143,092.21 and 58,978.02 is: 81,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.02 : 143,092.21 = 58,978.02 : x
  2. Step 2: Convert to fraction form
    103,690.02/143,092.21 = 58,978.02/x
  3. Step 3: Cross multiply
    103,690.02x = 143,092.21 × 58,978.02
  4. Step 4: Simplify right side
    103,690.02x = 8,439,295,223.22
  5. Step 5: Solve for x
    x = 8,439,295,223.22/103,690.02
  6. Step 6: Final answer
    x = 81,389.66

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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.