Home / 186,429.12-257,424.09-151,979.40

Finding the Fourth Proportional to 186,429.12, 257,424.09 and 151,979.40

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Solution

The fourth proportional to 186,429.12, 257,424.09 and 151,979.40 is: 209,855.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,429.12 : 257,424.09 = 151,979.40 : x
  2. Step 2: Convert to fraction form
    186,429.12/257,424.09 = 151,979.40/x
  3. Step 3: Cross multiply
    186,429.12x = 257,424.09 × 151,979.40
  4. Step 4: Simplify right side
    186,429.12x = 39,123,158,743.75
  5. Step 5: Solve for x
    x = 39,123,158,743.75/186,429.12
  6. Step 6: Final answer
    x = 209,855.41

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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.