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Finding the Fourth Proportional to 164,587.70, 246,881.55 and 85,855.70

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Solution

The fourth proportional to 164,587.70, 246,881.55 and 85,855.70 is: 128,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,587.70 : 246,881.55 = 85,855.70 : x
  2. Step 2: Convert to fraction form
    164,587.70/246,881.55 = 85,855.70/x
  3. Step 3: Cross multiply
    164,587.70x = 246,881.55 × 85,855.70
  4. Step 4: Simplify right side
    164,587.70x = 21,196,188,292.34
  5. Step 5: Solve for x
    x = 21,196,188,292.34/164,587.70
  6. Step 6: Final answer
    x = 128,783.55

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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.