Home / 108,720.77-150,036.23-81,448.54

Finding the Fourth Proportional to 108,720.77, 150,036.23 and 81,448.54

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Solution

The fourth proportional to 108,720.77, 150,036.23 and 81,448.54 is: 112,400.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,720.77 : 150,036.23 = 81,448.54 : x
  2. Step 2: Convert to fraction form
    108,720.77/150,036.23 = 81,448.54/x
  3. Step 3: Cross multiply
    108,720.77x = 150,036.23 × 81,448.54
  4. Step 4: Simplify right side
    108,720.77x = 12,220,231,709.14
  5. Step 5: Solve for x
    x = 12,220,231,709.14/108,720.77
  6. Step 6: Final answer
    x = 112,400.16

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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.