Home / 139,968,007.20-209,952,010.80-71,093,253.60

Finding the Fourth Proportional to 139,968,007.20, 209,952,010.80 and 71,093,253.60

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Solution

The fourth proportional to 139,968,007.20, 209,952,010.80 and 71,093,253.60 is: 106,639,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,007.20 : 209,952,010.80 = 71,093,253.60 : x
  2. Step 2: Convert to fraction form
    139,968,007.20/209,952,010.80 = 71,093,253.60/x
  3. Step 3: Cross multiply
    139,968,007.20x = 209,952,010.80 × 71,093,253.60
  4. Step 4: Simplify right side
    139,968,007.20x = 14,926,171,547,634,338
  5. Step 5: Solve for x
    x = 14,926,171,547,634,338/139,968,007.20
  6. Step 6: Final answer
    x = 106,639,880.40

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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.