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Finding the Fourth Proportional to 164,798.60, 247,140.30 and 85,886.60

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Solution

The fourth proportional to 164,798.60, 247,140.30 and 85,886.60 is: 128,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,798.60 : 247,140.30 = 85,886.60 : x
  2. Step 2: Convert to fraction form
    164,798.60/247,140.30 = 85,886.60/x
  3. Step 3: Cross multiply
    164,798.60x = 247,140.30 × 85,886.60
  4. Step 4: Simplify right side
    164,798.60x = 21,226,040,089.98
  5. Step 5: Solve for x
    x = 21,226,040,089.98/164,798.60
  6. Step 6: Final answer
    x = 128,799.88

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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.