Home / 129,930.40-194,895.60-122,057.20

Finding the Fourth Proportional to 129,930.40, 194,895.60 and 122,057.20

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Solution

The fourth proportional to 129,930.40, 194,895.60 and 122,057.20 is: 183,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,930.40 : 194,895.60 = 122,057.20 : x
  2. Step 2: Convert to fraction form
    129,930.40/194,895.60 = 122,057.20/x
  3. Step 3: Cross multiply
    129,930.40x = 194,895.60 × 122,057.20
  4. Step 4: Simplify right side
    129,930.40x = 23,788,411,228.32
  5. Step 5: Solve for x
    x = 23,788,411,228.32/129,930.40
  6. Step 6: Final answer
    x = 183,085.80

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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.