Home / 136,140.80-204,429.90-102,898.40

Finding the Fourth Proportional to 136,140.80, 204,429.90 and 102,898.40

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Solution

The fourth proportional to 136,140.80, 204,429.90 and 102,898.40 is: 154,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,140.80 : 204,429.90 = 102,898.40 : x
  2. Step 2: Convert to fraction form
    136,140.80/204,429.90 = 102,898.40/x
  3. Step 3: Cross multiply
    136,140.80x = 204,429.90 × 102,898.40
  4. Step 4: Simplify right side
    136,140.80x = 21,035,509,622.16
  5. Step 5: Solve for x
    x = 21,035,509,622.16/136,140.80
  6. Step 6: Final answer
    x = 154,512.90

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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.