Home / 108,557.92-149,725.68-72,736.48

Finding the Fourth Proportional to 108,557.92, 149,725.68 and 72,736.48

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Solution

The fourth proportional to 108,557.92, 149,725.68 and 72,736.48 is: 100,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,557.92 : 149,725.68 = 72,736.48 : x
  2. Step 2: Convert to fraction form
    108,557.92/149,725.68 = 72,736.48/x
  3. Step 3: Cross multiply
    108,557.92x = 149,725.68 × 72,736.48
  4. Step 4: Simplify right side
    108,557.92x = 10,890,518,928.81
  5. Step 5: Solve for x
    x = 10,890,518,928.81/108,557.92
  6. Step 6: Final answer
    x = 100,319.89

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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.