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Finding the Fourth Proportional to 139,897.00, 209,886.37 and 45,125.09

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Solution

The fourth proportional to 139,897.00, 209,886.37 and 45,125.09 is: 67,700.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,897.00 : 209,886.37 = 45,125.09 : x
  2. Step 2: Convert to fraction form
    139,897.00/209,886.37 = 45,125.09/x
  3. Step 3: Cross multiply
    139,897.00x = 209,886.37 × 45,125.09
  4. Step 4: Simplify right side
    139,897.00x = 9,471,140,960.85
  5. Step 5: Solve for x
    x = 9,471,140,960.85/139,897.00
  6. Step 6: Final answer
    x = 67,700.81

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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.