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Finding the Fourth Proportional to 139,707.34, 209,562.93 and 39,867.50

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Solution

The fourth proportional to 139,707.34, 209,562.93 and 39,867.50 is: 59,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,707.34 : 209,562.93 = 39,867.50 : x
  2. Step 2: Convert to fraction form
    139,707.34/209,562.93 = 39,867.50/x
  3. Step 3: Cross multiply
    139,707.34x = 209,562.93 × 39,867.50
  4. Step 4: Simplify right side
    139,707.34x = 8,354,750,635.68
  5. Step 5: Solve for x
    x = 8,354,750,635.68/139,707.34
  6. Step 6: Final answer
    x = 59,801.80

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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.