Home / 158,535.10-218,778.37-86,913.58

Finding the Fourth Proportional to 158,535.10, 218,778.37 and 86,913.58

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Solution

The fourth proportional to 158,535.10, 218,778.37 and 86,913.58 is: 119,940.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,535.10 : 218,778.37 = 86,913.58 : x
  2. Step 2: Convert to fraction form
    158,535.10/218,778.37 = 86,913.58/x
  3. Step 3: Cross multiply
    158,535.10x = 218,778.37 × 86,913.58
  4. Step 4: Simplify right side
    158,535.10x = 19,014,811,363.26
  5. Step 5: Solve for x
    x = 19,014,811,363.26/158,535.10
  6. Step 6: Final answer
    x = 119,940.70

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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.