Home / 121,139.04-167,125.44-89,383.68

Finding the Fourth Proportional to 121,139.04, 167,125.44 and 89,383.68

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Solution

The fourth proportional to 121,139.04, 167,125.44 and 89,383.68 is: 123,315.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,139.04 : 167,125.44 = 89,383.68 : x
  2. Step 2: Convert to fraction form
    121,139.04/167,125.44 = 89,383.68/x
  3. Step 3: Cross multiply
    121,139.04x = 167,125.44 × 89,383.68
  4. Step 4: Simplify right side
    121,139.04x = 14,938,286,848.82
  5. Step 5: Solve for x
    x = 14,938,286,848.82/121,139.04
  6. Step 6: Final answer
    x = 123,315.22

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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.