Home / 151,315.07-208,806.80-86,780.97

Finding the Fourth Proportional to 151,315.07, 208,806.80 and 86,780.97

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Solution

The fourth proportional to 151,315.07, 208,806.80 and 86,780.97 is: 119,753.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,315.07 : 208,806.80 = 86,780.97 : x
  2. Step 2: Convert to fraction form
    151,315.07/208,806.80 = 86,780.97/x
  3. Step 3: Cross multiply
    151,315.07x = 208,806.80 × 86,780.97
  4. Step 4: Simplify right side
    151,315.07x = 18,120,456,646.60
  5. Step 5: Solve for x
    x = 18,120,456,646.60/151,315.07
  6. Step 6: Final answer
    x = 119,753.15

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1.5x scale

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.