Home / 210,544.36-290,631.78-129,985

Finding the Fourth Proportional to 210,544.36, 290,631.78 and 129,985

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Solution

The fourth proportional to 210,544.36, 290,631.78 and 129,985 is: 179,429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,544.36 : 290,631.78 = 129,985 : x
  2. Step 2: Convert to fraction form
    210,544.36/290,631.78 = 129,985/x
  3. Step 3: Cross multiply
    210,544.36x = 290,631.78 × 129,985
  4. Step 4: Simplify right side
    210,544.36x = 37,777,771,923.30
  5. Step 5: Solve for x
    x = 37,777,771,923.30/210,544.36
  6. Step 6: Final answer
    x = 179,429.04

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1.5x scale

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.