Home / 90,791,142.40-136,186,713.60-83,776,121.20

Finding the Fourth Proportional to 90,791,142.40, 136,186,713.60 and 83,776,121.20

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Solution

The fourth proportional to 90,791,142.40, 136,186,713.60 and 83,776,121.20 is: 125,664,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791,142.40 : 136,186,713.60 = 83,776,121.20 : x
  2. Step 2: Convert to fraction form
    90,791,142.40/136,186,713.60 = 83,776,121.20/x
  3. Step 3: Cross multiply
    90,791,142.40x = 136,186,713.60 × 83,776,121.20
  4. Step 4: Simplify right side
    90,791,142.40x = 11,409,194,624,383,288
  5. Step 5: Solve for x
    x = 11,409,194,624,383,288/90,791,142.40
  6. Step 6: Final answer
    x = 125,664,181.80

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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.