Home / 121,856.33-168,180.77-74,124.65

Finding the Fourth Proportional to 121,856.33, 168,180.77 and 74,124.65

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Solution

The fourth proportional to 121,856.33, 168,180.77 and 74,124.65 is: 102,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,856.33 : 168,180.77 = 74,124.65 : x
  2. Step 2: Convert to fraction form
    121,856.33/168,180.77 = 74,124.65/x
  3. Step 3: Cross multiply
    121,856.33x = 168,180.77 × 74,124.65
  4. Step 4: Simplify right side
    121,856.33x = 12,466,340,342.36
  5. Step 5: Solve for x
    x = 12,466,340,342.36/121,856.33
  6. Step 6: Final answer
    x = 102,303.59

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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.