Home / 121,655.19-167,859.81-67,931.94

Finding the Fourth Proportional to 121,655.19, 167,859.81 and 67,931.94

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Solution

The fourth proportional to 121,655.19, 167,859.81 and 67,931.94 is: 93,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,655.19 : 167,859.81 = 67,931.94 : x
  2. Step 2: Convert to fraction form
    121,655.19/167,859.81 = 67,931.94/x
  3. Step 3: Cross multiply
    121,655.19x = 167,859.81 × 67,931.94
  4. Step 4: Simplify right side
    121,655.19x = 11,403,042,541.33
  5. Step 5: Solve for x
    x = 11,403,042,541.33/121,655.19
  6. Step 6: Final answer
    x = 93,732.48

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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.