Home / 155,916.15-215,197.67-98,519.03

Finding the Fourth Proportional to 155,916.15, 215,197.67 and 98,519.03

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Solution

The fourth proportional to 155,916.15, 215,197.67 and 98,519.03 is: 135,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,916.15 : 215,197.67 = 98,519.03 : x
  2. Step 2: Convert to fraction form
    155,916.15/215,197.67 = 98,519.03/x
  3. Step 3: Cross multiply
    155,916.15x = 215,197.67 × 98,519.03
  4. Step 4: Simplify right side
    155,916.15x = 21,201,064,138.08
  5. Step 5: Solve for x
    x = 21,201,064,138.08/155,916.15
  6. Step 6: Final answer
    x = 135,977.35

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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.