Home / 125,603.10-173,236.83-86,905.35

Finding the Fourth Proportional to 125,603.10, 173,236.83 and 86,905.35

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Solution

The fourth proportional to 125,603.10, 173,236.83 and 86,905.35 is: 119,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,603.10 : 173,236.83 = 86,905.35 : x
  2. Step 2: Convert to fraction form
    125,603.10/173,236.83 = 86,905.35/x
  3. Step 3: Cross multiply
    125,603.10x = 173,236.83 × 86,905.35
  4. Step 4: Simplify right side
    125,603.10x = 15,055,207,344.04
  5. Step 5: Solve for x
    x = 15,055,207,344.04/125,603.10
  6. Step 6: Final answer
    x = 119,863.34

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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.