Home / 121,210.63-181,689.56-67,824.34

Finding the Fourth Proportional to 121,210.63, 181,689.56 and 67,824.34

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Solution

The fourth proportional to 121,210.63, 181,689.56 and 67,824.34 is: 101,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,210.63 : 181,689.56 = 67,824.34 : x
  2. Step 2: Convert to fraction form
    121,210.63/181,689.56 = 67,824.34/x
  3. Step 3: Cross multiply
    121,210.63x = 181,689.56 × 67,824.34
  4. Step 4: Simplify right side
    121,210.63x = 12,322,973,244.32
  5. Step 5: Solve for x
    x = 12,322,973,244.32/121,210.63
  6. Step 6: Final answer
    x = 101,665.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.