Home / 154,819.08-213,695.70-101,112.45

Finding the Fourth Proportional to 154,819.08, 213,695.70 and 101,112.45

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Solution

The fourth proportional to 154,819.08, 213,695.70 and 101,112.45 is: 139,564.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,819.08 : 213,695.70 = 101,112.45 : x
  2. Step 2: Convert to fraction form
    154,819.08/213,695.70 = 101,112.45/x
  3. Step 3: Cross multiply
    154,819.08x = 213,695.70 × 101,112.45
  4. Step 4: Simplify right side
    154,819.08x = 21,607,295,781.47
  5. Step 5: Solve for x
    x = 21,607,295,781.47/154,819.08
  6. Step 6: Final answer
    x = 139,564.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.