Home / 109,885.36-151,616.36-74,141.68

Finding the Fourth Proportional to 109,885.36, 151,616.36 and 74,141.68

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Solution

The fourth proportional to 109,885.36, 151,616.36 and 74,141.68 is: 102,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,885.36 : 151,616.36 = 74,141.68 : x
  2. Step 2: Convert to fraction form
    109,885.36/151,616.36 = 74,141.68/x
  3. Step 3: Cross multiply
    109,885.36x = 151,616.36 × 74,141.68
  4. Step 4: Simplify right side
    109,885.36x = 11,241,091,645.88
  5. Step 5: Solve for x
    x = 11,241,091,645.88/109,885.36
  6. Step 6: Final answer
    x = 102,298.36

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1.5x scale

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.