Home / 156,834.36-216,450-93,172.68

Finding the Fourth Proportional to 156,834.36, 216,450 and 93,172.68

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Solution

The fourth proportional to 156,834.36, 216,450 and 93,172.68 is: 128,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,834.36 : 216,450 = 93,172.68 : x
  2. Step 2: Convert to fraction form
    156,834.36/216,450 = 93,172.68/x
  3. Step 3: Cross multiply
    156,834.36x = 216,450 × 93,172.68
  4. Step 4: Simplify right side
    156,834.36x = 20,167,226,586
  5. Step 5: Solve for x
    x = 20,167,226,586/156,834.36
  6. Step 6: Final answer
    x = 128,589.34

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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.