Home / 158,378.45-218,562.32-86,761.05

Finding the Fourth Proportional to 158,378.45, 218,562.32 and 86,761.05

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Solution

The fourth proportional to 158,378.45, 218,562.32 and 86,761.05 is: 119,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,378.45 : 218,562.32 = 86,761.05 : x
  2. Step 2: Convert to fraction form
    158,378.45/218,562.32 = 86,761.05/x
  3. Step 3: Cross multiply
    158,378.45x = 218,562.32 × 86,761.05
  4. Step 4: Simplify right side
    158,378.45x = 18,962,695,939.83
  5. Step 5: Solve for x
    x = 18,962,695,939.83/158,378.45
  6. Step 6: Final answer
    x = 119,730.28

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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.