Home / 138,053.31-190,511.46-77,624.01

Finding the Fourth Proportional to 138,053.31, 190,511.46 and 77,624.01

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Solution

The fourth proportional to 138,053.31, 190,511.46 and 77,624.01 is: 107,119.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,053.31 : 190,511.46 = 77,624.01 : x
  2. Step 2: Convert to fraction form
    138,053.31/190,511.46 = 77,624.01/x
  3. Step 3: Cross multiply
    138,053.31x = 190,511.46 × 77,624.01
  4. Step 4: Simplify right side
    138,053.31x = 14,788,263,476.15
  5. Step 5: Solve for x
    x = 14,788,263,476.15/138,053.31
  6. Step 6: Final answer
    x = 107,119.95

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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.