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Finding the Fourth Proportional to 158,594.75, 218,840.64 and 86,955.92

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Solution

The fourth proportional to 158,594.75, 218,840.64 and 86,955.92 is: 119,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,594.75 : 218,840.64 = 86,955.92 : x
  2. Step 2: Convert to fraction form
    158,594.75/218,840.64 = 86,955.92/x
  3. Step 3: Cross multiply
    158,594.75x = 218,840.64 × 86,955.92
  4. Step 4: Simplify right side
    158,594.75x = 19,029,489,184.59
  5. Step 5: Solve for x
    x = 19,029,489,184.59/158,594.75
  6. Step 6: Final answer
    x = 119,988.14

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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.