Home / 210,519.60-290,645.76-137,002.08

Finding the Fourth Proportional to 210,519.60, 290,645.76 and 137,002.08

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Solution

The fourth proportional to 210,519.60, 290,645.76 and 137,002.08 is: 189,146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,519.60 : 290,645.76 = 137,002.08 : x
  2. Step 2: Convert to fraction form
    210,519.60/290,645.76 = 137,002.08/x
  3. Step 3: Cross multiply
    210,519.60x = 290,645.76 × 137,002.08
  4. Step 4: Simplify right side
    210,519.60x = 39,819,073,663.18
  5. Step 5: Solve for x
    x = 39,819,073,663.18/210,519.60
  6. Step 6: Final answer
    x = 189,146.63

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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.