Home / 131,270.82-181,175.61-99,384.36

Finding the Fourth Proportional to 131,270.82, 181,175.61 and 99,384.36

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Solution

The fourth proportional to 131,270.82, 181,175.61 and 99,384.36 is: 137,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,270.82 : 181,175.61 = 99,384.36 : x
  2. Step 2: Convert to fraction form
    131,270.82/181,175.61 = 99,384.36/x
  3. Step 3: Cross multiply
    131,270.82x = 181,175.61 × 99,384.36
  4. Step 4: Simplify right side
    131,270.82x = 18,006,022,047.46
  5. Step 5: Solve for x
    x = 18,006,022,047.46/131,270.82
  6. Step 6: Final answer
    x = 137,166.98

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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.