Home / 115,049.06-158,816.68-77,345.18

Finding the Fourth Proportional to 115,049.06, 158,816.68 and 77,345.18

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Solution

The fourth proportional to 115,049.06, 158,816.68 and 77,345.18 is: 106,769.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,049.06 : 158,816.68 = 77,345.18 : x
  2. Step 2: Convert to fraction form
    115,049.06/158,816.68 = 77,345.18/x
  3. Step 3: Cross multiply
    115,049.06x = 158,816.68 × 77,345.18
  4. Step 4: Simplify right side
    115,049.06x = 12,283,703,907.52
  5. Step 5: Solve for x
    x = 12,283,703,907.52/115,049.06
  6. Step 6: Final answer
    x = 106,769.27

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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.