Home / 245,875.71-339,273.18-136,979.31

Finding the Fourth Proportional to 245,875.71, 339,273.18 and 136,979.31

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Solution

The fourth proportional to 245,875.71, 339,273.18 and 136,979.31 is: 189,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,875.71 : 339,273.18 = 136,979.31 : x
  2. Step 2: Convert to fraction form
    245,875.71/339,273.18 = 136,979.31/x
  3. Step 3: Cross multiply
    245,875.71x = 339,273.18 × 136,979.31
  4. Step 4: Simplify right side
    245,875.71x = 46,473,406,097.91
  5. Step 5: Solve for x
    x = 46,473,406,097.91/245,875.71
  6. Step 6: Final answer
    x = 189,011.78

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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.