Home / 139,935.48-209,924.28-49,971.21

Finding the Fourth Proportional to 139,935.48, 209,924.28 and 49,971.21

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Solution

The fourth proportional to 139,935.48, 209,924.28 and 49,971.21 is: 74,964.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,935.48 : 209,924.28 = 49,971.21 : x
  2. Step 2: Convert to fraction form
    139,935.48/209,924.28 = 49,971.21/x
  3. Step 3: Cross multiply
    139,935.48x = 209,924.28 × 49,971.21
  4. Step 4: Simplify right side
    139,935.48x = 10,490,170,279.98
  5. Step 5: Solve for x
    x = 10,490,170,279.98/139,935.48
  6. Step 6: Final answer
    x = 74,964.34

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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.