Home / 108,084.92-149,114.32-72,218.12

Finding the Fourth Proportional to 108,084.92, 149,114.32 and 72,218.12

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Solution

The fourth proportional to 108,084.92, 149,114.32 and 72,218.12 is: 99,632.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,084.92 : 149,114.32 = 72,218.12 : x
  2. Step 2: Convert to fraction form
    108,084.92/149,114.32 = 72,218.12/x
  3. Step 3: Cross multiply
    108,084.92x = 149,114.32 × 72,218.12
  4. Step 4: Simplify right side
    108,084.92x = 10,768,754,929.36
  5. Step 5: Solve for x
    x = 10,768,754,929.36/108,084.92
  6. Step 6: Final answer
    x = 99,632.36

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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.