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Finding the Fourth Proportional to 137,478.87, 206,242.79 and 70,901.01

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Solution

The fourth proportional to 137,478.87, 206,242.79 and 70,901.01 is: 106,364.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,478.87 : 206,242.79 = 70,901.01 : x
  2. Step 2: Convert to fraction form
    137,478.87/206,242.79 = 70,901.01/x
  3. Step 3: Cross multiply
    137,478.87x = 206,242.79 × 70,901.01
  4. Step 4: Simplify right side
    137,478.87x = 14,622,821,761.71
  5. Step 5: Solve for x
    x = 14,622,821,761.71/137,478.87
  6. Step 6: Final answer
    x = 106,364.14

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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.