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Finding the Fourth Proportional to 111,455.73, 153,808.91 and 63,710.12

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Solution

The fourth proportional to 111,455.73, 153,808.91 and 63,710.12 is: 87,919.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,455.73 : 153,808.91 = 63,710.12 : x
  2. Step 2: Convert to fraction form
    111,455.73/153,808.91 = 63,710.12/x
  3. Step 3: Cross multiply
    111,455.73x = 153,808.91 × 63,710.12
  4. Step 4: Simplify right side
    111,455.73x = 9,799,183,264.49
  5. Step 5: Solve for x
    x = 9,799,183,264.49/111,455.73
  6. Step 6: Final answer
    x = 87,919.96

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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.