Home / 109,649.17-151,324.64-87,173.64

Finding the Fourth Proportional to 109,649.17, 151,324.64 and 87,173.64

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Solution

The fourth proportional to 109,649.17, 151,324.64 and 87,173.64 is: 120,306.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,649.17 : 151,324.64 = 87,173.64 : x
  2. Step 2: Convert to fraction form
    109,649.17/151,324.64 = 87,173.64/x
  3. Step 3: Cross multiply
    109,649.17x = 151,324.64 × 87,173.64
  4. Step 4: Simplify right side
    109,649.17x = 13,191,520,374.89
  5. Step 5: Solve for x
    x = 13,191,520,374.89/109,649.17
  6. Step 6: Final answer
    x = 120,306.62

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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.