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Finding the Fourth Proportional to 111,893.21, 154,425.80 and 62,842.90

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Solution

The fourth proportional to 111,893.21, 154,425.80 and 62,842.90 is: 86,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.21 : 154,425.80 = 62,842.90 : x
  2. Step 2: Convert to fraction form
    111,893.21/154,425.80 = 62,842.90/x
  3. Step 3: Cross multiply
    111,893.21x = 154,425.80 × 62,842.90
  4. Step 4: Simplify right side
    111,893.21x = 9,704,564,642.20
  5. Step 5: Solve for x
    x = 9,704,564,642.20/111,893.21
  6. Step 6: Final answer
    x = 86,730.60

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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.