Home / 139,968,013.70-209,952,020.55-82,430,668.10

Finding the Fourth Proportional to 139,968,013.70, 209,952,020.55 and 82,430,668.10

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Solution

The fourth proportional to 139,968,013.70, 209,952,020.55 and 82,430,668.10 is: 123,646,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,013.70 : 209,952,020.55 = 82,430,668.10 : x
  2. Step 2: Convert to fraction form
    139,968,013.70/209,952,020.55 = 82,430,668.10/x
  3. Step 3: Cross multiply
    139,968,013.70x = 209,952,020.55 × 82,430,668.10
  4. Step 4: Simplify right side
    139,968,013.70x = 17,306,485,322,881,430
  5. Step 5: Solve for x
    x = 17,306,485,322,881,430/139,968,013.70
  6. Step 6: Final answer
    x = 123,646,002.15

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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.