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Finding the Fourth Proportional to 128,886.39, 193,254.26 and 48,929.67

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Solution

The fourth proportional to 128,886.39, 193,254.26 and 48,929.67 is: 73,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,886.39 : 193,254.26 = 48,929.67 : x
  2. Step 2: Convert to fraction form
    128,886.39/193,254.26 = 48,929.67/x
  3. Step 3: Cross multiply
    128,886.39x = 193,254.26 × 48,929.67
  4. Step 4: Simplify right side
    128,886.39x = 9,455,866,923.25
  5. Step 5: Solve for x
    x = 9,455,866,923.25/128,886.39
  6. Step 6: Final answer
    x = 73,365.91

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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.