Home / 85,166.84-127,749.60-21,981.58

Finding the Fourth Proportional to 85,166.84, 127,749.60 and 21,981.58

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Solution

The fourth proportional to 85,166.84, 127,749.60 and 21,981.58 is: 32,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,166.84 : 127,749.60 = 21,981.58 : x
  2. Step 2: Convert to fraction form
    85,166.84/127,749.60 = 21,981.58/x
  3. Step 3: Cross multiply
    85,166.84x = 127,749.60 × 21,981.58
  4. Step 4: Simplify right side
    85,166.84x = 2,808,138,052.37
  5. Step 5: Solve for x
    x = 2,808,138,052.37/85,166.84
  6. Step 6: Final answer
    x = 32,972.20

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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.