Home / 158,258.07-218,387.95-86,624.51

Finding the Fourth Proportional to 158,258.07, 218,387.95 and 86,624.51

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Solution

The fourth proportional to 158,258.07, 218,387.95 and 86,624.51 is: 119,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,258.07 : 218,387.95 = 86,624.51 : x
  2. Step 2: Convert to fraction form
    158,258.07/218,387.95 = 86,624.51/x
  3. Step 3: Cross multiply
    158,258.07x = 218,387.95 × 86,624.51
  4. Step 4: Simplify right side
    158,258.07x = 18,917,747,850.15
  5. Step 5: Solve for x
    x = 18,917,747,850.15/158,258.07
  6. Step 6: Final answer
    x = 119,537.33

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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.