Home / 116,956.15-161,400.39-64,569.75

Finding the Fourth Proportional to 116,956.15, 161,400.39 and 64,569.75

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Solution

The fourth proportional to 116,956.15, 161,400.39 and 64,569.75 is: 89,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,956.15 : 161,400.39 = 64,569.75 : x
  2. Step 2: Convert to fraction form
    116,956.15/161,400.39 = 64,569.75/x
  3. Step 3: Cross multiply
    116,956.15x = 161,400.39 × 64,569.75
  4. Step 4: Simplify right side
    116,956.15x = 10,421,582,832.20
  5. Step 5: Solve for x
    x = 10,421,582,832.20/116,956.15
  6. Step 6: Final answer
    x = 89,106.76

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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.