Home / 81,923.40-122,885.10-72,300.60

Finding the Fourth Proportional to 81,923.40, 122,885.10 and 72,300.60

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Solution

The fourth proportional to 81,923.40, 122,885.10 and 72,300.60 is: 108,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,923.40 : 122,885.10 = 72,300.60 : x
  2. Step 2: Convert to fraction form
    81,923.40/122,885.10 = 72,300.60/x
  3. Step 3: Cross multiply
    81,923.40x = 122,885.10 × 72,300.60
  4. Step 4: Simplify right side
    81,923.40x = 8,884,666,461.06
  5. Step 5: Solve for x
    x = 8,884,666,461.06/81,923.40
  6. Step 6: Final answer
    x = 108,450.90

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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.