Home / 108,139.36-149,221.65-60,391.68

Finding the Fourth Proportional to 108,139.36, 149,221.65 and 60,391.68

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Solution

The fourth proportional to 108,139.36, 149,221.65 and 60,391.68 is: 83,334.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,139.36 : 149,221.65 = 60,391.68 : x
  2. Step 2: Convert to fraction form
    108,139.36/149,221.65 = 60,391.68/x
  3. Step 3: Cross multiply
    108,139.36x = 149,221.65 × 60,391.68
  4. Step 4: Simplify right side
    108,139.36x = 9,011,746,135.87
  5. Step 5: Solve for x
    x = 9,011,746,135.87/108,139.36
  6. Step 6: Final answer
    x = 83,334.56

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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.