Home / 163,256.40-225,278.28-91,620

Finding the Fourth Proportional to 163,256.40, 225,278.28 and 91,620

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Solution

The fourth proportional to 163,256.40, 225,278.28 and 91,620 is: 126,426.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,256.40 : 225,278.28 = 91,620 : x
  2. Step 2: Convert to fraction form
    163,256.40/225,278.28 = 91,620/x
  3. Step 3: Cross multiply
    163,256.40x = 225,278.28 × 91,620
  4. Step 4: Simplify right side
    163,256.40x = 20,639,996,013.60
  5. Step 5: Solve for x
    x = 20,639,996,013.60/163,256.40
  6. Step 6: Final answer
    x = 126,426.87

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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.