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Finding the Fourth Proportional to 139,737.35, 209,638.56 and 39,898.91

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Solution

The fourth proportional to 139,737.35, 209,638.56 and 39,898.91 is: 59,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,737.35 : 209,638.56 = 39,898.91 : x
  2. Step 2: Convert to fraction form
    139,737.35/209,638.56 = 39,898.91/x
  3. Step 3: Cross multiply
    139,737.35x = 209,638.56 × 39,898.91
  4. Step 4: Simplify right side
    139,737.35x = 8,364,350,037.97
  5. Step 5: Solve for x
    x = 8,364,350,037.97/139,737.35
  6. Step 6: Final answer
    x = 59,857.65

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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.