Home / 100,987.02-139,317.57-62,736.39

Finding the Fourth Proportional to 100,987.02, 139,317.57 and 62,736.39

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Solution

The fourth proportional to 100,987.02, 139,317.57 and 62,736.39 is: 86,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,987.02 : 139,317.57 = 62,736.39 : x
  2. Step 2: Convert to fraction form
    100,987.02/139,317.57 = 62,736.39/x
  3. Step 3: Cross multiply
    100,987.02x = 139,317.57 × 62,736.39
  4. Step 4: Simplify right side
    100,987.02x = 8,740,281,405.37
  5. Step 5: Solve for x
    x = 8,740,281,405.37/100,987.02
  6. Step 6: Final answer
    x = 86,548.56

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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.