Home / 109,428.54-151,002.36-61,693.62

Finding the Fourth Proportional to 109,428.54, 151,002.36 and 61,693.62

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Solution

The fourth proportional to 109,428.54, 151,002.36 and 61,693.62 is: 85,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,428.54 : 151,002.36 = 61,693.62 : x
  2. Step 2: Convert to fraction form
    109,428.54/151,002.36 = 61,693.62/x
  3. Step 3: Cross multiply
    109,428.54x = 151,002.36 × 61,693.62
  4. Step 4: Simplify right side
    109,428.54x = 9,315,882,216.94
  5. Step 5: Solve for x
    x = 9,315,882,216.94/109,428.54
  6. Step 6: Final answer
    x = 85,132.11

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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.