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Finding the Fourth Proportional to 113,630.95, 156,821.76 and 84,900.73

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Solution

The fourth proportional to 113,630.95, 156,821.76 and 84,900.73 is: 117,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,630.95 : 156,821.76 = 84,900.73 : x
  2. Step 2: Convert to fraction form
    113,630.95/156,821.76 = 84,900.73/x
  3. Step 3: Cross multiply
    113,630.95x = 156,821.76 × 84,900.73
  4. Step 4: Simplify right side
    113,630.95x = 13,314,281,903.88
  5. Step 5: Solve for x
    x = 13,314,281,903.88/113,630.95
  6. Step 6: Final answer
    x = 117,171.26

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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.