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Finding the Fourth Proportional to 139,752.10, 209,598.71 and 44,990.74

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Solution

The fourth proportional to 139,752.10, 209,598.71 and 44,990.74 is: 67,476.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,752.10 : 209,598.71 = 44,990.74 : x
  2. Step 2: Convert to fraction form
    139,752.10/209,598.71 = 44,990.74/x
  3. Step 3: Cross multiply
    139,752.10x = 209,598.71 × 44,990.74
  4. Step 4: Simplify right side
    139,752.10x = 9,430,000,316.99
  5. Step 5: Solve for x
    x = 9,430,000,316.99/139,752.10
  6. Step 6: Final answer
    x = 67,476.63

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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.