Home / 92,815.83-138,988.24-77,783.42

Finding the Fourth Proportional to 92,815.83, 138,988.24 and 77,783.42

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Solution

The fourth proportional to 92,815.83, 138,988.24 and 77,783.42 is: 116,477.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,815.83 : 138,988.24 = 77,783.42 : x
  2. Step 2: Convert to fraction form
    92,815.83/138,988.24 = 77,783.42/x
  3. Step 3: Cross multiply
    92,815.83x = 138,988.24 × 77,783.42
  4. Step 4: Simplify right side
    92,815.83x = 10,810,980,799.99
  5. Step 5: Solve for x
    x = 10,810,980,799.99/92,815.83
  6. Step 6: Final answer
    x = 116,477.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.