Home / 145,017,900.14-200,127,253.11-78,940,297.67

Finding the Fourth Proportional to 145,017,900.14, 200,127,253.11 and 78,940,297.67

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Solution

The fourth proportional to 145,017,900.14, 200,127,253.11 and 78,940,297.67 is: 108,938,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,900.14 : 200,127,253.11 = 78,940,297.67 : x
  2. Step 2: Convert to fraction form
    145,017,900.14/200,127,253.11 = 78,940,297.67/x
  3. Step 3: Cross multiply
    145,017,900.14x = 200,127,253.11 × 78,940,297.67
  4. Step 4: Simplify right side
    145,017,900.14x = 15,798,104,932,382,834
  5. Step 5: Solve for x
    x = 15,798,104,932,382,834/145,017,900.14
  6. Step 6: Final answer
    x = 108,938,999.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.