Home / 156,991.20-216,653.58-89,936.16

Finding the Fourth Proportional to 156,991.20, 216,653.58 and 89,936.16

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Solution

The fourth proportional to 156,991.20, 216,653.58 and 89,936.16 is: 124,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,991.20 : 216,653.58 = 89,936.16 : x
  2. Step 2: Convert to fraction form
    156,991.20/216,653.58 = 89,936.16/x
  3. Step 3: Cross multiply
    156,991.20x = 216,653.58 × 89,936.16
  4. Step 4: Simplify right side
    156,991.20x = 19,484,991,035.45
  5. Step 5: Solve for x
    x = 19,484,991,035.45/156,991.20
  6. Step 6: Final answer
    x = 124,115.18

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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.