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Finding the Fourth Proportional to 191,915.24, 287,872.88 and 67,256.24

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Solution

The fourth proportional to 191,915.24, 287,872.88 and 67,256.24 is: 100,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,915.24 : 287,872.88 = 67,256.24 : x
  2. Step 2: Convert to fraction form
    191,915.24/287,872.88 = 67,256.24/x
  3. Step 3: Cross multiply
    191,915.24x = 287,872.88 × 67,256.24
  4. Step 4: Simplify right side
    191,915.24x = 19,361,247,506.77
  5. Step 5: Solve for x
    x = 19,361,247,506.77/191,915.24
  6. Step 6: Final answer
    x = 100,884.37

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1.5x scale

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.