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Finding the Fourth Proportional to 158,570.80, 218,829.80 and 86,950.64

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Solution

The fourth proportional to 158,570.80, 218,829.80 and 86,950.64 is: 119,993.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,570.80 : 218,829.80 = 86,950.64 : x
  2. Step 2: Convert to fraction form
    158,570.80/218,829.80 = 86,950.64/x
  3. Step 3: Cross multiply
    158,570.80x = 218,829.80 × 86,950.64
  4. Step 4: Simplify right side
    158,570.80x = 19,027,391,161.07
  5. Step 5: Solve for x
    x = 19,027,391,161.07/158,570.80
  6. Step 6: Final answer
    x = 119,993.03

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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.