Home / 130,149,698.78-179,612,196.46-77,928,753.36

Finding the Fourth Proportional to 130,149,698.78, 179,612,196.46 and 77,928,753.36

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Solution

The fourth proportional to 130,149,698.78, 179,612,196.46 and 77,928,753.36 is: 107,545,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,149,698.78 : 179,612,196.46 = 77,928,753.36 : x
  2. Step 2: Convert to fraction form
    130,149,698.78/179,612,196.46 = 77,928,753.36/x
  3. Step 3: Cross multiply
    130,149,698.78x = 179,612,196.46 × 77,928,753.36
  4. Step 4: Simplify right side
    130,149,698.78x = 13,996,954,558,379,206
  5. Step 5: Solve for x
    x = 13,996,954,558,379,206/130,149,698.78
  6. Step 6: Final answer
    x = 107,545,039.98

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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.