Home / 132,143.63-182,297.66-78,398.10

Finding the Fourth Proportional to 132,143.63, 182,297.66 and 78,398.10

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Solution

The fourth proportional to 132,143.63, 182,297.66 and 78,398.10 is: 108,153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,143.63 : 182,297.66 = 78,398.10 : x
  2. Step 2: Convert to fraction form
    132,143.63/182,297.66 = 78,398.10/x
  3. Step 3: Cross multiply
    132,143.63x = 182,297.66 × 78,398.10
  4. Step 4: Simplify right side
    132,143.63x = 14,291,789,786.46
  5. Step 5: Solve for x
    x = 14,291,789,786.46/132,143.63
  6. Step 6: Final answer
    x = 108,153.46

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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.