Home / 123,591.08-170,465.10-81,134.12

Finding the Fourth Proportional to 123,591.08, 170,465.10 and 81,134.12

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Solution

The fourth proportional to 123,591.08, 170,465.10 and 81,134.12 is: 111,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,591.08 : 170,465.10 = 81,134.12 : x
  2. Step 2: Convert to fraction form
    123,591.08/170,465.10 = 81,134.12/x
  3. Step 3: Cross multiply
    123,591.08x = 170,465.10 × 81,134.12
  4. Step 4: Simplify right side
    123,591.08x = 13,830,535,879.21
  5. Step 5: Solve for x
    x = 13,830,535,879.21/123,591.08
  6. Step 6: Final answer
    x = 111,905.62

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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.