Home / 109,603.40-164,077.05-103,115.30

Finding the Fourth Proportional to 109,603.40, 164,077.05 and 103,115.30

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Solution

The fourth proportional to 109,603.40, 164,077.05 and 103,115.30 is: 154,364.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,603.40 : 164,077.05 = 103,115.30 : x
  2. Step 2: Convert to fraction form
    109,603.40/164,077.05 = 103,115.30/x
  3. Step 3: Cross multiply
    109,603.40x = 164,077.05 × 103,115.30
  4. Step 4: Simplify right side
    109,603.40x = 16,918,854,233.87
  5. Step 5: Solve for x
    x = 16,918,854,233.87/109,603.40
  6. Step 6: Final answer
    x = 154,364.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.