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Finding the Fourth Proportional to 137,140.45, 205,636.71 and 62,219.71

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Solution

The fourth proportional to 137,140.45, 205,636.71 and 62,219.71 is: 93,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,140.45 : 205,636.71 = 62,219.71 : x
  2. Step 2: Convert to fraction form
    137,140.45/205,636.71 = 62,219.71/x
  3. Step 3: Cross multiply
    137,140.45x = 205,636.71 × 62,219.71
  4. Step 4: Simplify right side
    137,140.45x = 12,794,656,461.55
  5. Step 5: Solve for x
    x = 12,794,656,461.55/137,140.45
  6. Step 6: Final answer
    x = 93,296.01

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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.