Home / 132,420.36-182,799-78,722.76

Finding the Fourth Proportional to 132,420.36, 182,799 and 78,722.76

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Solution

The fourth proportional to 132,420.36, 182,799 and 78,722.76 is: 108,672.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,420.36 : 182,799 = 78,722.76 : x
  2. Step 2: Convert to fraction form
    132,420.36/182,799 = 78,722.76/x
  3. Step 3: Cross multiply
    132,420.36x = 182,799 × 78,722.76
  4. Step 4: Simplify right side
    132,420.36x = 14,390,441,805.24
  5. Step 5: Solve for x
    x = 14,390,441,805.24/132,420.36
  6. Step 6: Final answer
    x = 108,672.43

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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.