Home / 118,783.14-178,004.20-71,417.58

Finding the Fourth Proportional to 118,783.14, 178,004.20 and 71,417.58

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Solution

The fourth proportional to 118,783.14, 178,004.20 and 71,417.58 is: 107,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,783.14 : 178,004.20 = 71,417.58 : x
  2. Step 2: Convert to fraction form
    118,783.14/178,004.20 = 71,417.58/x
  3. Step 3: Cross multiply
    118,783.14x = 178,004.20 × 71,417.58
  4. Step 4: Simplify right side
    118,783.14x = 12,712,629,193.84
  5. Step 5: Solve for x
    x = 12,712,629,193.84/118,783.14
  6. Step 6: Final answer
    x = 107,023.85

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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.