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Finding the Fourth Proportional to 108,060.70, 148,945.32 and 72,237.64

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Solution

The fourth proportional to 108,060.70, 148,945.32 and 72,237.64 is: 99,568.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,060.70 : 148,945.32 = 72,237.64 : x
  2. Step 2: Convert to fraction form
    108,060.70/148,945.32 = 72,237.64/x
  3. Step 3: Cross multiply
    108,060.70x = 148,945.32 × 72,237.64
  4. Step 4: Simplify right side
    108,060.70x = 10,759,458,405.84
  5. Step 5: Solve for x
    x = 10,759,458,405.84/108,060.70
  6. Step 6: Final answer
    x = 99,568.65

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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.