Home / 158,085.36-218,148.66-86,465.97

Finding the Fourth Proportional to 158,085.36, 218,148.66 and 86,465.97

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Solution

The fourth proportional to 158,085.36, 218,148.66 and 86,465.97 is: 119,318.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,085.36 : 218,148.66 = 86,465.97 : x
  2. Step 2: Convert to fraction form
    158,085.36/218,148.66 = 86,465.97/x
  3. Step 3: Cross multiply
    158,085.36x = 218,148.66 × 86,465.97
  4. Step 4: Simplify right side
    158,085.36x = 18,862,435,491.10
  5. Step 5: Solve for x
    x = 18,862,435,491.10/158,085.36
  6. Step 6: Final answer
    x = 119,318.04

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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.