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Finding the Fourth Proportional to 156,554, 216,044.52 and 89,487.44

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Solution

The fourth proportional to 156,554, 216,044.52 and 89,487.44 is: 123,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,554 : 216,044.52 = 89,487.44 : x
  2. Step 2: Convert to fraction form
    156,554/216,044.52 = 89,487.44/x
  3. Step 3: Cross multiply
    156,554x = 216,044.52 × 89,487.44
  4. Step 4: Simplify right side
    156,554x = 19,333,271,020.83
  5. Step 5: Solve for x
    x = 19,333,271,020.83/156,554
  6. Step 6: Final answer
    x = 123,492.67

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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.