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Finding the Fourth Proportional to 108,465.47, 162,415.26 and 87,289.84

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Solution

The fourth proportional to 108,465.47, 162,415.26 and 87,289.84 is: 130,707.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,465.47 : 162,415.26 = 87,289.84 : x
  2. Step 2: Convert to fraction form
    108,465.47/162,415.26 = 87,289.84/x
  3. Step 3: Cross multiply
    108,465.47x = 162,415.26 × 87,289.84
  4. Step 4: Simplify right side
    108,465.47x = 14,177,202,058.96
  5. Step 5: Solve for x
    x = 14,177,202,058.96/108,465.47
  6. Step 6: Final answer
    x = 130,707.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.