Home / 129,088,709.55-178,148,735.03-72,591,236.68

Finding the Fourth Proportional to 129,088,709.55, 178,148,735.03 and 72,591,236.68

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Solution

The fourth proportional to 129,088,709.55, 178,148,735.03 and 72,591,236.68 is: 100,179,458.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,088,709.55 : 178,148,735.03 = 72,591,236.68 : x
  2. Step 2: Convert to fraction form
    129,088,709.55/178,148,735.03 = 72,591,236.68/x
  3. Step 3: Cross multiply
    129,088,709.55x = 178,148,735.03 × 72,591,236.68
  4. Step 4: Simplify right side
    129,088,709.55x = 12,932,036,988,805,338
  5. Step 5: Solve for x
    x = 12,932,036,988,805,338/129,088,709.55
  6. Step 6: Final answer
    x = 100,179,458.25

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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.