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Finding the Fourth Proportional to 139,883.40, 209,821.32 and 34,701.12

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Solution

The fourth proportional to 139,883.40, 209,821.32 and 34,701.12 is: 52,050.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,883.40 : 209,821.32 = 34,701.12 : x
  2. Step 2: Convert to fraction form
    139,883.40/209,821.32 = 34,701.12/x
  3. Step 3: Cross multiply
    139,883.40x = 209,821.32 × 34,701.12
  4. Step 4: Simplify right side
    139,883.40x = 7,281,034,803.88
  5. Step 5: Solve for x
    x = 7,281,034,803.88/139,883.40
  6. Step 6: Final answer
    x = 52,050.74

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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.