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Finding the Fourth Proportional to 146,978.68, 202,829.58 and 79,910.68

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Solution

The fourth proportional to 146,978.68, 202,829.58 and 79,910.68 is: 110,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,978.68 : 202,829.58 = 79,910.68 : x
  2. Step 2: Convert to fraction form
    146,978.68/202,829.58 = 79,910.68/x
  3. Step 3: Cross multiply
    146,978.68x = 202,829.58 × 79,910.68
  4. Step 4: Simplify right side
    146,978.68x = 16,208,249,661.91
  5. Step 5: Solve for x
    x = 16,208,249,661.91/146,978.68
  6. Step 6: Final answer
    x = 110,276.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.