Home / 121,184.64-167,262.57-78,669.36

Finding the Fourth Proportional to 121,184.64, 167,262.57 and 78,669.36

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Solution

The fourth proportional to 121,184.64, 167,262.57 and 78,669.36 is: 108,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,184.64 : 167,262.57 = 78,669.36 : x
  2. Step 2: Convert to fraction form
    121,184.64/167,262.57 = 78,669.36/x
  3. Step 3: Cross multiply
    121,184.64x = 167,262.57 × 78,669.36
  4. Step 4: Simplify right side
    121,184.64x = 13,158,439,333.86
  5. Step 5: Solve for x
    x = 13,158,439,333.86/121,184.64
  6. Step 6: Final answer
    x = 108,581.74

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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.