Home / 212,518.45-293,275-115,720.81

Finding the Fourth Proportional to 212,518.45, 293,275 and 115,720.81

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Solution

The fourth proportional to 212,518.45, 293,275 and 115,720.81 is: 159,694.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,518.45 : 293,275 = 115,720.81 : x
  2. Step 2: Convert to fraction form
    212,518.45/293,275 = 115,720.81/x
  3. Step 3: Cross multiply
    212,518.45x = 293,275 × 115,720.81
  4. Step 4: Simplify right side
    212,518.45x = 33,938,020,552.75
  5. Step 5: Solve for x
    x = 33,938,020,552.75/212,518.45
  6. Step 6: Final answer
    x = 159,694.47

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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.