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Finding the Fourth Proportional to 117,425.71, 162,076.31 and 72,114.49

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Solution

The fourth proportional to 117,425.71, 162,076.31 and 72,114.49 is: 99,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,425.71 : 162,076.31 = 72,114.49 : x
  2. Step 2: Convert to fraction form
    117,425.71/162,076.31 = 72,114.49/x
  3. Step 3: Cross multiply
    117,425.71x = 162,076.31 × 72,114.49
  4. Step 4: Simplify right side
    117,425.71x = 11,688,050,436.73
  5. Step 5: Solve for x
    x = 11,688,050,436.73/117,425.71
  6. Step 6: Final answer
    x = 99,535.70

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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.