Home / 109,989.60-164,984.40-103,077.60

Finding the Fourth Proportional to 109,989.60, 164,984.40 and 103,077.60

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Solution

The fourth proportional to 109,989.60, 164,984.40 and 103,077.60 is: 154,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,989.60 : 164,984.40 = 103,077.60 : x
  2. Step 2: Convert to fraction form
    109,989.60/164,984.40 = 103,077.60/x
  3. Step 3: Cross multiply
    109,989.60x = 164,984.40 × 103,077.60
  4. Step 4: Simplify right side
    109,989.60x = 17,006,195,989.44
  5. Step 5: Solve for x
    x = 17,006,195,989.44/109,989.60
  6. Step 6: Final answer
    x = 154,616.40

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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.