Home / 189,507.09-284,439.24-139,434.51

Finding the Fourth Proportional to 189,507.09, 284,439.24 and 139,434.51

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Solution

The fourth proportional to 189,507.09, 284,439.24 and 139,434.51 is: 209,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,507.09 : 284,439.24 = 139,434.51 : x
  2. Step 2: Convert to fraction form
    189,507.09/284,439.24 = 139,434.51/x
  3. Step 3: Cross multiply
    189,507.09x = 284,439.24 × 139,434.51
  4. Step 4: Simplify right side
    189,507.09x = 39,660,646,054.17
  5. Step 5: Solve for x
    x = 39,660,646,054.17/189,507.09
  6. Step 6: Final answer
    x = 209,283.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.