Home / 126,428.09-174,476.05-72,713.14

Finding the Fourth Proportional to 126,428.09, 174,476.05 and 72,713.14

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Solution

The fourth proportional to 126,428.09, 174,476.05 and 72,713.14 is: 100,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428.09 : 174,476.05 = 72,713.14 : x
  2. Step 2: Convert to fraction form
    126,428.09/174,476.05 = 72,713.14/x
  3. Step 3: Cross multiply
    126,428.09x = 174,476.05 × 72,713.14
  4. Step 4: Simplify right side
    126,428.09x = 12,686,700,832.32
  5. Step 5: Solve for x
    x = 12,686,700,832.32/126,428.09
  6. Step 6: Final answer
    x = 100,347.17

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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.