Home / 151,672.51-209,306.75-83,690.12

Finding the Fourth Proportional to 151,672.51, 209,306.75 and 83,690.12

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Solution

The fourth proportional to 151,672.51, 209,306.75 and 83,690.12 is: 115,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,672.51 : 209,306.75 = 83,690.12 : x
  2. Step 2: Convert to fraction form
    151,672.51/209,306.75 = 83,690.12/x
  3. Step 3: Cross multiply
    151,672.51x = 209,306.75 × 83,690.12
  4. Step 4: Simplify right side
    151,672.51x = 17,516,907,024.31
  5. Step 5: Solve for x
    x = 17,516,907,024.31/151,672.51
  6. Step 6: Final answer
    x = 115,491.64

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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.