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Finding the Fourth Proportional to 108,059.76, 148,943.97 and 72,236.70

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Solution

The fourth proportional to 108,059.76, 148,943.97 and 72,236.70 is: 99,567.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,059.76 : 148,943.97 = 72,236.70 : x
  2. Step 2: Convert to fraction form
    108,059.76/148,943.97 = 72,236.70/x
  3. Step 3: Cross multiply
    108,059.76x = 148,943.97 × 72,236.70
  4. Step 4: Simplify right side
    108,059.76x = 10,759,220,877.70
  5. Step 5: Solve for x
    x = 10,759,220,877.70/108,059.76
  6. Step 6: Final answer
    x = 99,567.32

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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.