Home / 138,855.04-191,618.88-75,192.64

Finding the Fourth Proportional to 138,855.04, 191,618.88 and 75,192.64

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Solution

The fourth proportional to 138,855.04, 191,618.88 and 75,192.64 is: 103,765.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,855.04 : 191,618.88 = 75,192.64 : x
  2. Step 2: Convert to fraction form
    138,855.04/191,618.88 = 75,192.64/x
  3. Step 3: Cross multiply
    138,855.04x = 191,618.88 × 75,192.64
  4. Step 4: Simplify right side
    138,855.04x = 14,408,329,461.04
  5. Step 5: Solve for x
    x = 14,408,329,461.04/138,855.04
  6. Step 6: Final answer
    x = 103,765.26

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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.