Home / 190,995.12-286,411.68-91,039.68

Finding the Fourth Proportional to 190,995.12, 286,411.68 and 91,039.68

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Solution

The fourth proportional to 190,995.12, 286,411.68 and 91,039.68 is: 136,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,995.12 : 286,411.68 = 91,039.68 : x
  2. Step 2: Convert to fraction form
    190,995.12/286,411.68 = 91,039.68/x
  3. Step 3: Cross multiply
    190,995.12x = 286,411.68 × 91,039.68
  4. Step 4: Simplify right side
    190,995.12x = 26,074,827,695.46
  5. Step 5: Solve for x
    x = 26,074,827,695.46/190,995.12
  6. Step 6: Final answer
    x = 136,520.91

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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.