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Finding the Fourth Proportional to 112,068.84, 154,655.06 and 63,670.85

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Solution

The fourth proportional to 112,068.84, 154,655.06 and 63,670.85 is: 87,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,068.84 : 154,655.06 = 63,670.85 : x
  2. Step 2: Convert to fraction form
    112,068.84/154,655.06 = 63,670.85/x
  3. Step 3: Cross multiply
    112,068.84x = 154,655.06 × 63,670.85
  4. Step 4: Simplify right side
    112,068.84x = 9,847,019,299.73
  5. Step 5: Solve for x
    x = 9,847,019,299.73/112,068.84
  6. Step 6: Final answer
    x = 87,865.81

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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.