Home / 109,728.70-151,423.41-61,984.06

Finding the Fourth Proportional to 109,728.70, 151,423.41 and 61,984.06

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Solution

The fourth proportional to 109,728.70, 151,423.41 and 61,984.06 is: 85,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.70 : 151,423.41 = 61,984.06 : x
  2. Step 2: Convert to fraction form
    109,728.70/151,423.41 = 61,984.06/x
  3. Step 3: Cross multiply
    109,728.70x = 151,423.41 × 61,984.06
  4. Step 4: Simplify right side
    109,728.70x = 9,385,837,730.84
  5. Step 5: Solve for x
    x = 9,385,837,730.84/109,728.70
  6. Step 6: Final answer
    x = 85,536.76

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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.