Home / 272,188.05-408,365.07-139,161.72

Finding the Fourth Proportional to 272,188.05, 408,365.07 and 139,161.72

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Solution

The fourth proportional to 272,188.05, 408,365.07 and 139,161.72 is: 208,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,188.05 : 408,365.07 = 139,161.72 : x
  2. Step 2: Convert to fraction form
    272,188.05/408,365.07 = 139,161.72/x
  3. Step 3: Cross multiply
    272,188.05x = 408,365.07 × 139,161.72
  4. Step 4: Simplify right side
    272,188.05x = 56,828,785,529.12
  5. Step 5: Solve for x
    x = 56,828,785,529.12/272,188.05
  6. Step 6: Final answer
    x = 208,785.01

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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.