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Finding the Fourth Proportional to 158,559.33, 218,807.13 and 86,936.91

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Solution

The fourth proportional to 158,559.33, 218,807.13 and 86,936.91 is: 119,970.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,559.33 : 218,807.13 = 86,936.91 : x
  2. Step 2: Convert to fraction form
    158,559.33/218,807.13 = 86,936.91/x
  3. Step 3: Cross multiply
    158,559.33x = 218,807.13 × 86,936.91
  4. Step 4: Simplify right side
    158,559.33x = 19,022,415,768.17
  5. Step 5: Solve for x
    x = 19,022,415,768.17/158,559.33
  6. Step 6: Final answer
    x = 119,970.33

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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.