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Finding the Fourth Proportional to 158,535.80, 218,783.58 and 89,619.80

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Solution

The fourth proportional to 158,535.80, 218,783.58 and 89,619.80 is: 123,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,535.80 : 218,783.58 = 89,619.80 : x
  2. Step 2: Convert to fraction form
    158,535.80/218,783.58 = 89,619.80/x
  3. Step 3: Cross multiply
    158,535.80x = 218,783.58 × 89,619.80
  4. Step 4: Simplify right side
    158,535.80x = 19,607,340,682.88
  5. Step 5: Solve for x
    x = 19,607,340,682.88/158,535.80
  6. Step 6: Final answer
    x = 123,677.68

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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.