Home / 212,036.78-318,055.38-99,634.58

Finding the Fourth Proportional to 212,036.78, 318,055.38 and 99,634.58

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Solution

The fourth proportional to 212,036.78, 318,055.38 and 99,634.58 is: 149,451.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,036.78 : 318,055.38 = 99,634.58 : x
  2. Step 2: Convert to fraction form
    212,036.78/318,055.38 = 99,634.58/x
  3. Step 3: Cross multiply
    212,036.78x = 318,055.38 × 99,634.58
  4. Step 4: Simplify right side
    212,036.78x = 31,689,314,203.04
  5. Step 5: Solve for x
    x = 31,689,314,203.04/212,036.78
  6. Step 6: Final answer
    x = 149,451.97

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1.5x scale

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.