Home / 136,166.40-204,030.90-128,293.20

Finding the Fourth Proportional to 136,166.40, 204,030.90 and 128,293.20

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Solution

The fourth proportional to 136,166.40, 204,030.90 and 128,293.20 is: 192,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,166.40 : 204,030.90 = 128,293.20 : x
  2. Step 2: Convert to fraction form
    136,166.40/204,030.90 = 128,293.20/x
  3. Step 3: Cross multiply
    136,166.40x = 204,030.90 × 128,293.20
  4. Step 4: Simplify right side
    136,166.40x = 26,175,777,059.88
  5. Step 5: Solve for x
    x = 26,175,777,059.88/136,166.40
  6. Step 6: Final answer
    x = 192,233.75

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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.