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Finding the Fourth Proportional to 134,166.80, 201,250.20 and 81,678.80

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Solution

The fourth proportional to 134,166.80, 201,250.20 and 81,678.80 is: 122,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,166.80 : 201,250.20 = 81,678.80 : x
  2. Step 2: Convert to fraction form
    134,166.80/201,250.20 = 81,678.80/x
  3. Step 3: Cross multiply
    134,166.80x = 201,250.20 × 81,678.80
  4. Step 4: Simplify right side
    134,166.80x = 16,437,874,835.76
  5. Step 5: Solve for x
    x = 16,437,874,835.76/134,166.80
  6. Step 6: Final answer
    x = 122,518.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.