Home / 158,300.88-218,455.28-86,685.36

Finding the Fourth Proportional to 158,300.88, 218,455.28 and 86,685.36

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Solution

The fourth proportional to 158,300.88, 218,455.28 and 86,685.36 is: 119,625.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,300.88 : 218,455.28 = 86,685.36 : x
  2. Step 2: Convert to fraction form
    158,300.88/218,455.28 = 86,685.36/x
  3. Step 3: Cross multiply
    158,300.88x = 218,455.28 × 86,685.36
  4. Step 4: Simplify right side
    158,300.88x = 18,936,874,590.70
  5. Step 5: Solve for x
    x = 18,936,874,590.70/158,300.88
  6. Step 6: Final answer
    x = 119,625.83

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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.