Home / 122,103.84-168,508.50-71,108.36

Finding the Fourth Proportional to 122,103.84, 168,508.50 and 71,108.36

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Solution

The fourth proportional to 122,103.84, 168,508.50 and 71,108.36 is: 98,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,103.84 : 168,508.50 = 71,108.36 : x
  2. Step 2: Convert to fraction form
    122,103.84/168,508.50 = 71,108.36/x
  3. Step 3: Cross multiply
    122,103.84x = 168,508.50 × 71,108.36
  4. Step 4: Simplify right side
    122,103.84x = 11,982,363,081.06
  5. Step 5: Solve for x
    x = 11,982,363,081.06/122,103.84
  6. Step 6: Final answer
    x = 98,132.57

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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.