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Finding the Fourth Proportional to 126,090, 174,004.20 and 69,502.59

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Solution

The fourth proportional to 126,090, 174,004.20 and 69,502.59 is: 95,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,090 : 174,004.20 = 69,502.59 : x
  2. Step 2: Convert to fraction form
    126,090/174,004.20 = 69,502.59/x
  3. Step 3: Cross multiply
    126,090x = 174,004.20 × 69,502.59
  4. Step 4: Simplify right side
    126,090x = 12,093,742,570.88
  5. Step 5: Solve for x
    x = 12,093,742,570.88/126,090
  6. Step 6: Final answer
    x = 95,913.57

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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.