Home / 171,949,207.45-257,685,187.66-78,347,428.81

Finding the Fourth Proportional to 171,949,207.45, 257,685,187.66 and 78,347,428.81

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Solution

The fourth proportional to 171,949,207.45, 257,685,187.66 and 78,347,428.81 is: 117,412,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,949,207.45 : 257,685,187.66 = 78,347,428.81 : x
  2. Step 2: Convert to fraction form
    171,949,207.45/257,685,187.66 = 78,347,428.81/x
  3. Step 3: Cross multiply
    171,949,207.45x = 257,685,187.66 × 78,347,428.81
  4. Step 4: Simplify right side
    171,949,207.45x = 20,188,971,894,689,200
  5. Step 5: Solve for x
    x = 20,188,971,894,689,200/171,949,207.45
  6. Step 6: Final answer
    x = 117,412,416.11

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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.