Home / 88,699.90-133,049.85-81,442.30

Finding the Fourth Proportional to 88,699.90, 133,049.85 and 81,442.30

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Solution

The fourth proportional to 88,699.90, 133,049.85 and 81,442.30 is: 122,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,699.90 : 133,049.85 = 81,442.30 : x
  2. Step 2: Convert to fraction form
    88,699.90/133,049.85 = 81,442.30/x
  3. Step 3: Cross multiply
    88,699.90x = 133,049.85 × 81,442.30
  4. Step 4: Simplify right side
    88,699.90x = 10,835,885,798.66
  5. Step 5: Solve for x
    x = 10,835,885,798.66/88,699.90
  6. Step 6: Final answer
    x = 122,163.45

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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.