Home / 108,768.12-150,129.36-71,041.56

Finding the Fourth Proportional to 108,768.12, 150,129.36 and 71,041.56

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Solution

The fourth proportional to 108,768.12, 150,129.36 and 71,041.56 is: 98,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,768.12 : 150,129.36 = 71,041.56 : x
  2. Step 2: Convert to fraction form
    108,768.12/150,129.36 = 71,041.56/x
  3. Step 3: Cross multiply
    108,768.12x = 150,129.36 × 71,041.56
  4. Step 4: Simplify right side
    108,768.12x = 10,665,423,936.20
  5. Step 5: Solve for x
    x = 10,665,423,936.20/108,768.12
  6. Step 6: Final answer
    x = 98,056.53

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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.