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Finding the Fourth Proportional to 139,520.20, 209,798.70 and 116,710.60

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Solution

The fourth proportional to 139,520.20, 209,798.70 and 116,710.60 is: 175,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,520.20 : 209,798.70 = 116,710.60 : x
  2. Step 2: Convert to fraction form
    139,520.20/209,798.70 = 116,710.60/x
  3. Step 3: Cross multiply
    139,520.20x = 209,798.70 × 116,710.60
  4. Step 4: Simplify right side
    139,520.20x = 24,485,732,156.22
  5. Step 5: Solve for x
    x = 24,485,732,156.22/139,520.20
  6. Step 6: Final answer
    x = 175,499.55

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1.5x scale

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.