Home / 121,128.30-167,157.05-67,426.00

Finding the Fourth Proportional to 121,128.30, 167,157.05 and 67,426.00

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Solution

The fourth proportional to 121,128.30, 167,157.05 and 67,426.00 is: 93,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128.30 : 167,157.05 = 67,426.00 : x
  2. Step 2: Convert to fraction form
    121,128.30/167,157.05 = 67,426.00/x
  3. Step 3: Cross multiply
    121,128.30x = 167,157.05 × 67,426.00
  4. Step 4: Simplify right side
    121,128.30x = 11,270,730,080.38
  5. Step 5: Solve for x
    x = 11,270,730,080.38/121,128.30
  6. Step 6: Final answer
    x = 93,047.87

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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.