Home / 129,279,674.37-178,359,331.58-99,519,424.28

Finding the Fourth Proportional to 129,279,674.37, 178,359,331.58 and 99,519,424.28

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Solution

The fourth proportional to 129,279,674.37, 178,359,331.58 and 99,519,424.28 is: 137,300,918.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,279,674.37 : 178,359,331.58 = 99,519,424.28 : x
  2. Step 2: Convert to fraction form
    129,279,674.37/178,359,331.58 = 99,519,424.28/x
  3. Step 3: Cross multiply
    129,279,674.37x = 178,359,331.58 × 99,519,424.28
  4. Step 4: Simplify right side
    129,279,674.37x = 17,750,217,992,417,828
  5. Step 5: Solve for x
    x = 17,750,217,992,417,828/129,279,674.37
  6. Step 6: Final answer
    x = 137,300,918.18

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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.