Home / 154,869.36-213,744.60-87,822.96

Finding the Fourth Proportional to 154,869.36, 213,744.60 and 87,822.96

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Solution

The fourth proportional to 154,869.36, 213,744.60 and 87,822.96 is: 121,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,869.36 : 213,744.60 = 87,822.96 : x
  2. Step 2: Convert to fraction form
    154,869.36/213,744.60 = 87,822.96/x
  3. Step 3: Cross multiply
    154,869.36x = 213,744.60 × 87,822.96
  4. Step 4: Simplify right side
    154,869.36x = 18,771,683,456.02
  5. Step 5: Solve for x
    x = 18,771,683,456.02/154,869.36
  6. Step 6: Final answer
    x = 121,209.80

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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.