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Finding the Fourth Proportional to 159,156, 219,640.80 and 87,541.44

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Solution

The fourth proportional to 159,156, 219,640.80 and 87,541.44 is: 120,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,156 : 219,640.80 = 87,541.44 : x
  2. Step 2: Convert to fraction form
    159,156/219,640.80 = 87,541.44/x
  3. Step 3: Cross multiply
    159,156x = 219,640.80 × 87,541.44
  4. Step 4: Simplify right side
    159,156x = 19,227,671,914.75
  5. Step 5: Solve for x
    x = 19,227,671,914.75/159,156
  6. Step 6: Final answer
    x = 120,810.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.