Home / 136,972.80-205,459.20-115,977.60

Finding the Fourth Proportional to 136,972.80, 205,459.20 and 115,977.60

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Solution

The fourth proportional to 136,972.80, 205,459.20 and 115,977.60 is: 173,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.80 : 205,459.20 = 115,977.60 : x
  2. Step 2: Convert to fraction form
    136,972.80/205,459.20 = 115,977.60/x
  3. Step 3: Cross multiply
    136,972.80x = 205,459.20 × 115,977.60
  4. Step 4: Simplify right side
    136,972.80x = 23,828,664,913.92
  5. Step 5: Solve for x
    x = 23,828,664,913.92/136,972.80
  6. Step 6: Final answer
    x = 173,966.40

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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.