Home / 121,025.12-167,051.04-78,589.76

Finding the Fourth Proportional to 121,025.12, 167,051.04 and 78,589.76

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Solution

The fourth proportional to 121,025.12, 167,051.04 and 78,589.76 is: 108,477.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,025.12 : 167,051.04 = 78,589.76 : x
  2. Step 2: Convert to fraction form
    121,025.12/167,051.04 = 78,589.76/x
  3. Step 3: Cross multiply
    121,025.12x = 167,051.04 × 78,589.76
  4. Step 4: Simplify right side
    121,025.12x = 13,128,501,141.35
  5. Step 5: Solve for x
    x = 13,128,501,141.35/121,025.12
  6. Step 6: Final answer
    x = 108,477.49

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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.