Home / 187,689.49-258,982.81-107,122.84

Finding the Fourth Proportional to 187,689.49, 258,982.81 and 107,122.84

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Solution

The fourth proportional to 187,689.49, 258,982.81 and 107,122.84 is: 147,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,689.49 : 258,982.81 = 107,122.84 : x
  2. Step 2: Convert to fraction form
    187,689.49/258,982.81 = 107,122.84/x
  3. Step 3: Cross multiply
    187,689.49x = 258,982.81 × 107,122.84
  4. Step 4: Simplify right side
    187,689.49x = 27,742,973,203.12
  5. Step 5: Solve for x
    x = 27,742,973,203.12/187,689.49
  6. Step 6: Final answer
    x = 147,813.14

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1.5x scale

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.