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Finding the Fourth Proportional to 113,526, 156,405.06 and 89,643.96

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Solution

The fourth proportional to 113,526, 156,405.06 and 89,643.96 is: 123,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,526 : 156,405.06 = 89,643.96 : x
  2. Step 2: Convert to fraction form
    113,526/156,405.06 = 89,643.96/x
  3. Step 3: Cross multiply
    113,526x = 156,405.06 × 89,643.96
  4. Step 4: Simplify right side
    113,526x = 14,020,768,942.44
  5. Step 5: Solve for x
    x = 14,020,768,942.44/113,526
  6. Step 6: Final answer
    x = 123,502.71

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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.