Home / 201,335,503.80-302,003,255.70-128,776,092.60

Finding the Fourth Proportional to 201,335,503.80, 302,003,255.70 and 128,776,092.60

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Solution

The fourth proportional to 201,335,503.80, 302,003,255.70 and 128,776,092.60 is: 193,164,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,335,503.80 : 302,003,255.70 = 128,776,092.60 : x
  2. Step 2: Convert to fraction form
    201,335,503.80/302,003,255.70 = 128,776,092.60/x
  3. Step 3: Cross multiply
    201,335,503.80x = 302,003,255.70 × 128,776,092.60
  4. Step 4: Simplify right side
    201,335,503.80x = 38,890,799,221,524,672
  5. Step 5: Solve for x
    x = 38,890,799,221,524,672/201,335,503.80
  6. Step 6: Final answer
    x = 193,164,138.90

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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.