Home / 121,662.32-167,835.68-76,317.52

Finding the Fourth Proportional to 121,662.32, 167,835.68 and 76,317.52

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Solution

The fourth proportional to 121,662.32, 167,835.68 and 76,317.52 is: 105,281.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,662.32 : 167,835.68 = 76,317.52 : x
  2. Step 2: Convert to fraction form
    121,662.32/167,835.68 = 76,317.52/x
  3. Step 3: Cross multiply
    121,662.32x = 167,835.68 × 76,317.52
  4. Step 4: Simplify right side
    121,662.32x = 12,808,802,865.11
  5. Step 5: Solve for x
    x = 12,808,802,865.11/121,662.32
  6. Step 6: Final answer
    x = 105,281.59

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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.