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Finding the Fourth Proportional to 164,060.80, 245,896.80 and 85,134.40

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Solution

The fourth proportional to 164,060.80, 245,896.80 and 85,134.40 is: 127,600.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,060.80 : 245,896.80 = 85,134.40 : x
  2. Step 2: Convert to fraction form
    164,060.80/245,896.80 = 85,134.40/x
  3. Step 3: Cross multiply
    164,060.80x = 245,896.80 × 85,134.40
  4. Step 4: Simplify right side
    164,060.80x = 20,934,276,529.92
  5. Step 5: Solve for x
    x = 20,934,276,529.92/164,060.80
  6. Step 6: Final answer
    x = 127,600.72

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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.