Home / 132,116.94-182,344.64-78,431.76

Finding the Fourth Proportional to 132,116.94, 182,344.64 and 78,431.76

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Solution

The fourth proportional to 132,116.94, 182,344.64 and 78,431.76 is: 108,249.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,116.94 : 182,344.64 = 78,431.76 : x
  2. Step 2: Convert to fraction form
    132,116.94/182,344.64 = 78,431.76/x
  3. Step 3: Cross multiply
    132,116.94x = 182,344.64 × 78,431.76
  4. Step 4: Simplify right side
    132,116.94x = 14,301,610,649.61
  5. Step 5: Solve for x
    x = 14,301,610,649.61/132,116.94
  6. Step 6: Final answer
    x = 108,249.64

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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.