Home / 139,968,217.20-209,952,325.80-82,430,871.60

Finding the Fourth Proportional to 139,968,217.20, 209,952,325.80 and 82,430,871.60

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Solution

The fourth proportional to 139,968,217.20, 209,952,325.80 and 82,430,871.60 is: 123,646,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,217.20 : 209,952,325.80 = 82,430,871.60 : x
  2. Step 2: Convert to fraction form
    139,968,217.20/209,952,325.80 = 82,430,871.60/x
  3. Step 3: Cross multiply
    139,968,217.20x = 209,952,325.80 × 82,430,871.60
  4. Step 4: Simplify right side
    139,968,217.20x = 17,306,553,210,141,168
  5. Step 5: Solve for x
    x = 17,306,553,210,141,168/139,968,217.20
  6. Step 6: Final answer
    x = 123,646,307.40

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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.