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Finding the Fourth Proportional to 109,679.48, 151,357.72 and 59,378.48

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Solution

The fourth proportional to 109,679.48, 151,357.72 and 59,378.48 is: 81,942.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,679.48 : 151,357.72 = 59,378.48 : x
  2. Step 2: Convert to fraction form
    109,679.48/151,357.72 = 59,378.48/x
  3. Step 3: Cross multiply
    109,679.48x = 151,357.72 × 59,378.48
  4. Step 4: Simplify right side
    109,679.48x = 8,987,391,349.87
  5. Step 5: Solve for x
    x = 8,987,391,349.87/109,679.48
  6. Step 6: Final answer
    x = 81,942.32

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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.