Home / 138,084.18-190,533.96-77,651.23

Finding the Fourth Proportional to 138,084.18, 190,533.96 and 77,651.23

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Solution

The fourth proportional to 138,084.18, 190,533.96 and 77,651.23 is: 107,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,084.18 : 190,533.96 = 77,651.23 : x
  2. Step 2: Convert to fraction form
    138,084.18/190,533.96 = 77,651.23/x
  3. Step 3: Cross multiply
    138,084.18x = 190,533.96 × 77,651.23
  4. Step 4: Simplify right side
    138,084.18x = 14,795,196,588.94
  5. Step 5: Solve for x
    x = 14,795,196,588.94/138,084.18
  6. Step 6: Final answer
    x = 107,146.21

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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.