Home / 100,899.21-139,161.44-62,637.15

Finding the Fourth Proportional to 100,899.21, 139,161.44 and 62,637.15

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Solution

The fourth proportional to 100,899.21, 139,161.44 and 62,637.15 is: 86,389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,899.21 : 139,161.44 = 62,637.15 : x
  2. Step 2: Convert to fraction form
    100,899.21/139,161.44 = 62,637.15/x
  3. Step 3: Cross multiply
    100,899.21x = 139,161.44 × 62,637.15
  4. Step 4: Simplify right side
    100,899.21x = 8,716,675,678.31
  5. Step 5: Solve for x
    x = 8,716,675,678.31/100,899.21
  6. Step 6: Final answer
    x = 86,389.93

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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.