Home / 109,728.67-151,423.75-61,331.73

Finding the Fourth Proportional to 109,728.67, 151,423.75 and 61,331.73

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Solution

The fourth proportional to 109,728.67, 151,423.75 and 61,331.73 is: 84,636.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.67 : 151,423.75 = 61,331.73 : x
  2. Step 2: Convert to fraction form
    109,728.67/151,423.75 = 61,331.73/x
  3. Step 3: Cross multiply
    109,728.67x = 151,423.75 × 61,331.73
  4. Step 4: Simplify right side
    109,728.67x = 9,287,080,550.59
  5. Step 5: Solve for x
    x = 9,287,080,550.59/109,728.67
  6. Step 6: Final answer
    x = 84,636.77

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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.