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Finding the Fourth Proportional to 100,686.54, 151,343.64 and 63,485.67

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Solution

The fourth proportional to 100,686.54, 151,343.64 and 63,485.67 is: 95,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,686.54 : 151,343.64 = 63,485.67 : x
  2. Step 2: Convert to fraction form
    100,686.54/151,343.64 = 63,485.67/x
  3. Step 3: Cross multiply
    100,686.54x = 151,343.64 × 63,485.67
  4. Step 4: Simplify right side
    100,686.54x = 9,608,152,953.18
  5. Step 5: Solve for x
    x = 9,608,152,953.18/100,686.54
  6. Step 6: Final answer
    x = 95,426.39

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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.