Home / 155,869.11-214,955.75-98,408.60

Finding the Fourth Proportional to 155,869.11, 214,955.75 and 98,408.60

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Solution

The fourth proportional to 155,869.11, 214,955.75 and 98,408.60 is: 135,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,869.11 : 214,955.75 = 98,408.60 : x
  2. Step 2: Convert to fraction form
    155,869.11/214,955.75 = 98,408.60/x
  3. Step 3: Cross multiply
    155,869.11x = 214,955.75 × 98,408.60
  4. Step 4: Simplify right side
    155,869.11x = 21,153,493,515.44
  5. Step 5: Solve for x
    x = 21,153,493,515.44/155,869.11
  6. Step 6: Final answer
    x = 135,713.19

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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.