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Finding the Fourth Proportional to 121,429.81, 167,574.22 and 66,984.06

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Solution

The fourth proportional to 121,429.81, 167,574.22 and 66,984.06 is: 92,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,429.81 : 167,574.22 = 66,984.06 : x
  2. Step 2: Convert to fraction form
    121,429.81/167,574.22 = 66,984.06/x
  3. Step 3: Cross multiply
    121,429.81x = 167,574.22 × 66,984.06
  4. Step 4: Simplify right side
    121,429.81x = 11,224,801,606.93
  5. Step 5: Solve for x
    x = 11,224,801,606.93/121,429.81
  6. Step 6: Final answer
    x = 92,438.60

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1.5x scale

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.