Home / 210,784.72-290,801.46-130,072

Finding the Fourth Proportional to 210,784.72, 290,801.46 and 130,072

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Solution

The fourth proportional to 210,784.72, 290,801.46 and 130,072 is: 179,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,784.72 : 290,801.46 = 130,072 : x
  2. Step 2: Convert to fraction form
    210,784.72/290,801.46 = 130,072/x
  3. Step 3: Cross multiply
    210,784.72x = 290,801.46 × 130,072
  4. Step 4: Simplify right side
    210,784.72x = 37,825,127,505.12
  5. Step 5: Solve for x
    x = 37,825,127,505.12/210,784.72
  6. Step 6: Final answer
    x = 179,449.10

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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.