Home / 121,913.91-168,253.20-76,626

Finding the Fourth Proportional to 121,913.91, 168,253.20 and 76,626

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Solution

The fourth proportional to 121,913.91, 168,253.20 and 76,626 is: 105,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,913.91 : 168,253.20 = 76,626 : x
  2. Step 2: Convert to fraction form
    121,913.91/168,253.20 = 76,626/x
  3. Step 3: Cross multiply
    121,913.91x = 168,253.20 × 76,626
  4. Step 4: Simplify right side
    121,913.91x = 12,892,569,703.20
  5. Step 5: Solve for x
    x = 12,892,569,703.20/121,913.91
  6. Step 6: Final answer
    x = 105,751.42

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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.