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Finding the Fourth Proportional to 106,741.80, 160,140.42 and 31,861.95

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Solution

The fourth proportional to 106,741.80, 160,140.42 and 31,861.95 is: 47,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,741.80 : 160,140.42 = 31,861.95 : x
  2. Step 2: Convert to fraction form
    106,741.80/160,140.42 = 31,861.95/x
  3. Step 3: Cross multiply
    106,741.80x = 160,140.42 × 31,861.95
  4. Step 4: Simplify right side
    106,741.80x = 5,102,386,055.02
  5. Step 5: Solve for x
    x = 5,102,386,055.02/106,741.80
  6. Step 6: Final answer
    x = 47,801.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.