Home / 158,355.47-218,530.61-86,736.69

Finding the Fourth Proportional to 158,355.47, 218,530.61 and 86,736.69

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Solution

The fourth proportional to 158,355.47, 218,530.61 and 86,736.69 is: 119,696.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,355.47 : 218,530.61 = 86,736.69 : x
  2. Step 2: Convert to fraction form
    158,355.47/218,530.61 = 86,736.69/x
  3. Step 3: Cross multiply
    158,355.47x = 218,530.61 × 86,736.69
  4. Step 4: Simplify right side
    158,355.47x = 18,954,621,666.66
  5. Step 5: Solve for x
    x = 18,954,621,666.66/158,355.47
  6. Step 6: Final answer
    x = 119,696.66

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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.