Home / 145,008,899.49-200,116,534.80-78,933,708.18

Finding the Fourth Proportional to 145,008,899.49, 200,116,534.80 and 78,933,708.18

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Solution

The fourth proportional to 145,008,899.49, 200,116,534.80 and 78,933,708.18 is: 108,930,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008,899.49 : 200,116,534.80 = 78,933,708.18 : x
  2. Step 2: Convert to fraction form
    145,008,899.49/200,116,534.80 = 78,933,708.18/x
  3. Step 3: Cross multiply
    145,008,899.49x = 200,116,534.80 × 78,933,708.18
  4. Step 4: Simplify right side
    145,008,899.49x = 15,795,940,159,896,018
  5. Step 5: Solve for x
    x = 15,795,940,159,896,018/145,008,899.49
  6. Step 6: Final answer
    x = 108,930,832.63

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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.