Home / 121,417.49-167,661.88-76,173.25

Finding the Fourth Proportional to 121,417.49, 167,661.88 and 76,173.25

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Solution

The fourth proportional to 121,417.49, 167,661.88 and 76,173.25 is: 105,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,417.49 : 167,661.88 = 76,173.25 : x
  2. Step 2: Convert to fraction form
    121,417.49/167,661.88 = 76,173.25/x
  3. Step 3: Cross multiply
    121,417.49x = 167,661.88 × 76,173.25
  4. Step 4: Simplify right side
    121,417.49x = 12,771,350,300.71
  5. Step 5: Solve for x
    x = 12,771,350,300.71/121,417.49
  6. Step 6: Final answer
    x = 105,185.43

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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.