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Finding the Fourth Proportional to 178,083.40, 266,898.30 and 72,783.40

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Solution

The fourth proportional to 178,083.40, 266,898.30 and 72,783.40 is: 109,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,083.40 : 266,898.30 = 72,783.40 : x
  2. Step 2: Convert to fraction form
    178,083.40/266,898.30 = 72,783.40/x
  3. Step 3: Cross multiply
    178,083.40x = 266,898.30 × 72,783.40
  4. Step 4: Simplify right side
    178,083.40x = 19,425,765,728.22
  5. Step 5: Solve for x
    x = 19,425,765,728.22/178,083.40
  6. Step 6: Final answer
    x = 109,082.41

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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.