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Finding the Fourth Proportional to 164,800.60, 247,143.30 and 85,888.60

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Solution

The fourth proportional to 164,800.60, 247,143.30 and 85,888.60 is: 128,802.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,800.60 : 247,143.30 = 85,888.60 : x
  2. Step 2: Convert to fraction form
    164,800.60/247,143.30 = 85,888.60/x
  3. Step 3: Cross multiply
    164,800.60x = 247,143.30 × 85,888.60
  4. Step 4: Simplify right side
    164,800.60x = 21,226,792,036.38
  5. Step 5: Solve for x
    x = 21,226,792,036.38/164,800.60
  6. Step 6: Final answer
    x = 128,802.88

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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.