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Finding the Fourth Proportional to 132,408.46, 182,721.53 and 71,980.63

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Solution

The fourth proportional to 132,408.46, 182,721.53 and 71,980.63 is: 99,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,408.46 : 182,721.53 = 71,980.63 : x
  2. Step 2: Convert to fraction form
    132,408.46/182,721.53 = 71,980.63/x
  3. Step 3: Cross multiply
    132,408.46x = 182,721.53 × 71,980.63
  4. Step 4: Simplify right side
    132,408.46x = 13,152,410,317.95
  5. Step 5: Solve for x
    x = 13,152,410,317.95/132,408.46
  6. Step 6: Final answer
    x = 99,332.10

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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.