Home / 109,623.72-151,285.05-61,878.72

Finding the Fourth Proportional to 109,623.72, 151,285.05 and 61,878.72

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Solution

The fourth proportional to 109,623.72, 151,285.05 and 61,878.72 is: 85,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,623.72 : 151,285.05 = 61,878.72 : x
  2. Step 2: Convert to fraction form
    109,623.72/151,285.05 = 61,878.72/x
  3. Step 3: Cross multiply
    109,623.72x = 151,285.05 × 61,878.72
  4. Step 4: Simplify right side
    109,623.72x = 9,361,325,249.14
  5. Step 5: Solve for x
    x = 9,361,325,249.14/109,623.72
  6. Step 6: Final answer
    x = 85,395.07

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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.