Home / 109,515.10-164,272.65-98,455.90

Finding the Fourth Proportional to 109,515.10, 164,272.65 and 98,455.90

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Solution

The fourth proportional to 109,515.10, 164,272.65 and 98,455.90 is: 147,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515.10 : 164,272.65 = 98,455.90 : x
  2. Step 2: Convert to fraction form
    109,515.10/164,272.65 = 98,455.90/x
  3. Step 3: Cross multiply
    109,515.10x = 164,272.65 × 98,455.90
  4. Step 4: Simplify right side
    109,515.10x = 16,173,611,601.14
  5. Step 5: Solve for x
    x = 16,173,611,601.14/109,515.10
  6. Step 6: Final answer
    x = 147,683.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.