Home / 108,891.20-150,293.60-78,345.92

Finding the Fourth Proportional to 108,891.20, 150,293.60 and 78,345.92

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Solution

The fourth proportional to 108,891.20, 150,293.60 and 78,345.92 is: 108,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,891.20 : 150,293.60 = 78,345.92 : x
  2. Step 2: Convert to fraction form
    108,891.20/150,293.60 = 78,345.92/x
  3. Step 3: Cross multiply
    108,891.20x = 150,293.60 × 78,345.92
  4. Step 4: Simplify right side
    108,891.20x = 11,774,890,362.11
  5. Step 5: Solve for x
    x = 11,774,890,362.11/108,891.20
  6. Step 6: Final answer
    x = 108,134.45

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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.