Home / 255,916.58-383,931.03-78,436.94

Finding the Fourth Proportional to 255,916.58, 383,931.03 and 78,436.94

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Solution

The fourth proportional to 255,916.58, 383,931.03 and 78,436.94 is: 117,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,916.58 : 383,931.03 = 78,436.94 : x
  2. Step 2: Convert to fraction form
    255,916.58/383,931.03 = 78,436.94/x
  3. Step 3: Cross multiply
    255,916.58x = 383,931.03 × 78,436.94
  4. Step 4: Simplify right side
    255,916.58x = 30,114,375,164.25
  5. Step 5: Solve for x
    x = 30,114,375,164.25/255,916.58
  6. Step 6: Final answer
    x = 117,672.62

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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.