Home / 158,292.72-218,434.32-86,673.60

Finding the Fourth Proportional to 158,292.72, 218,434.32 and 86,673.60

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Solution

The fourth proportional to 158,292.72, 218,434.32 and 86,673.60 is: 119,604.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,292.72 : 218,434.32 = 86,673.60 : x
  2. Step 2: Convert to fraction form
    158,292.72/218,434.32 = 86,673.60/x
  3. Step 3: Cross multiply
    158,292.72x = 218,434.32 × 86,673.60
  4. Step 4: Simplify right side
    158,292.72x = 18,932,488,877.95
  5. Step 5: Solve for x
    x = 18,932,488,877.95/158,292.72
  6. Step 6: Final answer
    x = 119,604.29

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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.