Home / 136,981.08-189,154.31-86,082.30

Finding the Fourth Proportional to 136,981.08, 189,154.31 and 86,082.30

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Solution

The fourth proportional to 136,981.08, 189,154.31 and 86,082.30 is: 118,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,981.08 : 189,154.31 = 86,082.30 : x
  2. Step 2: Convert to fraction form
    136,981.08/189,154.31 = 86,082.30/x
  3. Step 3: Cross multiply
    136,981.08x = 189,154.31 × 86,082.30
  4. Step 4: Simplify right side
    136,981.08x = 16,282,837,629.30
  5. Step 5: Solve for x
    x = 16,282,837,629.30/136,981.08
  6. Step 6: Final answer
    x = 118,869.25

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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.