Home / 156,735.28-216,356.34-105,778

Finding the Fourth Proportional to 156,735.28, 216,356.34 and 105,778

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Solution

The fourth proportional to 156,735.28, 216,356.34 and 105,778 is: 146,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,735.28 : 216,356.34 = 105,778 : x
  2. Step 2: Convert to fraction form
    156,735.28/216,356.34 = 105,778/x
  3. Step 3: Cross multiply
    156,735.28x = 216,356.34 × 105,778
  4. Step 4: Simplify right side
    156,735.28x = 22,885,740,932.52
  5. Step 5: Solve for x
    x = 22,885,740,932.52/156,735.28
  6. Step 6: Final answer
    x = 146,015.25

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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.