Home / 117,939.60-176,909.40-71,283.60

Finding the Fourth Proportional to 117,939.60, 176,909.40 and 71,283.60

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Solution

The fourth proportional to 117,939.60, 176,909.40 and 71,283.60 is: 106,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,939.60 : 176,909.40 = 71,283.60 : x
  2. Step 2: Convert to fraction form
    117,939.60/176,909.40 = 71,283.60/x
  3. Step 3: Cross multiply
    117,939.60x = 176,909.40 × 71,283.60
  4. Step 4: Simplify right side
    117,939.60x = 12,610,738,905.84
  5. Step 5: Solve for x
    x = 12,610,738,905.84/117,939.60
  6. Step 6: Final answer
    x = 106,925.40

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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.