Home / 158,228.48-218,353.40-85,629.68

Finding the Fourth Proportional to 158,228.48, 218,353.40 and 85,629.68

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Solution

The fourth proportional to 158,228.48, 218,353.40 and 85,629.68 is: 118,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,228.48 : 218,353.40 = 85,629.68 : x
  2. Step 2: Convert to fraction form
    158,228.48/218,353.40 = 85,629.68/x
  3. Step 3: Cross multiply
    158,228.48x = 218,353.40 × 85,629.68
  4. Step 4: Simplify right side
    158,228.48x = 18,697,531,768.91
  5. Step 5: Solve for x
    x = 18,697,531,768.91/158,228.48
  6. Step 6: Final answer
    x = 118,167.93

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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.