Home / 121,051.12-167,056.74-67,337.20

Finding the Fourth Proportional to 121,051.12, 167,056.74 and 67,337.20

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Solution

The fourth proportional to 121,051.12, 167,056.74 and 67,337.20 is: 92,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,051.12 : 167,056.74 = 67,337.20 : x
  2. Step 2: Convert to fraction form
    121,051.12/167,056.74 = 67,337.20/x
  3. Step 3: Cross multiply
    121,051.12x = 167,056.74 × 67,337.20
  4. Step 4: Simplify right side
    121,051.12x = 11,249,133,112.73
  5. Step 5: Solve for x
    x = 11,249,133,112.73/121,051.12
  6. Step 6: Final answer
    x = 92,928.78

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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.