Home / 260,008,051.20-390,012,076.80-106,764,086.40

Finding the Fourth Proportional to 260,008,051.20, 390,012,076.80 and 106,764,086.40

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Solution

The fourth proportional to 260,008,051.20, 390,012,076.80 and 106,764,086.40 is: 160,146,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,008,051.20 : 390,012,076.80 = 106,764,086.40 : x
  2. Step 2: Convert to fraction form
    260,008,051.20/390,012,076.80 = 106,764,086.40/x
  3. Step 3: Cross multiply
    260,008,051.20x = 390,012,076.80 × 106,764,086.40
  4. Step 4: Simplify right side
    260,008,051.20x = 41,639,283,064,518,640
  5. Step 5: Solve for x
    x = 41,639,283,064,518,640/260,008,051.20
  6. Step 6: Final answer
    x = 160,146,129.60

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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.