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Finding the Fourth Proportional to 158,368.23, 218,550.56 and 86,748.03

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Solution

The fourth proportional to 158,368.23, 218,550.56 and 86,748.03 is: 119,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,368.23 : 218,550.56 = 86,748.03 : x
  2. Step 2: Convert to fraction form
    158,368.23/218,550.56 = 86,748.03/x
  3. Step 3: Cross multiply
    158,368.23x = 218,550.56 × 86,748.03
  4. Step 4: Simplify right side
    158,368.23x = 18,958,830,101.66
  5. Step 5: Solve for x
    x = 18,958,830,101.66/158,368.23
  6. Step 6: Final answer
    x = 119,713.59

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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.