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Finding the Fourth Proportional to 104,846.30, 156,900.09 and 85,898.78

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Solution

The fourth proportional to 104,846.30, 156,900.09 and 85,898.78 is: 128,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,846.30 : 156,900.09 = 85,898.78 : x
  2. Step 2: Convert to fraction form
    104,846.30/156,900.09 = 85,898.78/x
  3. Step 3: Cross multiply
    104,846.30x = 156,900.09 × 85,898.78
  4. Step 4: Simplify right side
    104,846.30x = 13,477,526,312.89
  5. Step 5: Solve for x
    x = 13,477,526,312.89/104,846.30
  6. Step 6: Final answer
    x = 128,545.56

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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.