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Finding the Fourth Proportional to 112,166.76, 154,801.06 and 61,865.76

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Solution

The fourth proportional to 112,166.76, 154,801.06 and 61,865.76 is: 85,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,166.76 : 154,801.06 = 61,865.76 : x
  2. Step 2: Convert to fraction form
    112,166.76/154,801.06 = 61,865.76/x
  3. Step 3: Cross multiply
    112,166.76x = 154,801.06 × 61,865.76
  4. Step 4: Simplify right side
    112,166.76x = 9,576,885,225.71
  5. Step 5: Solve for x
    x = 9,576,885,225.71/112,166.76
  6. Step 6: Final answer
    x = 85,380.78

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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.