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Finding the Fourth Proportional to 161,130.60, 241,695.90 and 72,426.60

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Solution

The fourth proportional to 161,130.60, 241,695.90 and 72,426.60 is: 108,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,130.60 : 241,695.90 = 72,426.60 : x
  2. Step 2: Convert to fraction form
    161,130.60/241,695.90 = 72,426.60/x
  3. Step 3: Cross multiply
    161,130.60x = 241,695.90 × 72,426.60
  4. Step 4: Simplify right side
    161,130.60x = 17,505,212,270.94
  5. Step 5: Solve for x
    x = 17,505,212,270.94/161,130.60
  6. Step 6: Final answer
    x = 108,639.90

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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.