Home / 126,727.64-174,814-81,412.28

Finding the Fourth Proportional to 126,727.64, 174,814 and 81,412.28

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Solution

The fourth proportional to 126,727.64, 174,814 and 81,412.28 is: 112,303.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,727.64 : 174,814 = 81,412.28 : x
  2. Step 2: Convert to fraction form
    126,727.64/174,814 = 81,412.28/x
  3. Step 3: Cross multiply
    126,727.64x = 174,814 × 81,412.28
  4. Step 4: Simplify right side
    126,727.64x = 14,232,006,315.92
  5. Step 5: Solve for x
    x = 14,232,006,315.92/126,727.64
  6. Step 6: Final answer
    x = 112,303.89

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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.