Home / 126,428.84-174,465.06-72,705.32

Finding the Fourth Proportional to 126,428.84, 174,465.06 and 72,705.32

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Solution

The fourth proportional to 126,428.84, 174,465.06 and 72,705.32 is: 100,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428.84 : 174,465.06 = 72,705.32 : x
  2. Step 2: Convert to fraction form
    126,428.84/174,465.06 = 72,705.32/x
  3. Step 3: Cross multiply
    126,428.84x = 174,465.06 × 72,705.32
  4. Step 4: Simplify right side
    126,428.84x = 12,684,538,016.12
  5. Step 5: Solve for x
    x = 12,684,538,016.12/126,428.84
  6. Step 6: Final answer
    x = 100,329.47

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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.