Home / 151,674.78-209,320.98-87,164.76

Finding the Fourth Proportional to 151,674.78, 209,320.98 and 87,164.76

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Solution

The fourth proportional to 151,674.78, 209,320.98 and 87,164.76 is: 120,292.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,674.78 : 209,320.98 = 87,164.76 : x
  2. Step 2: Convert to fraction form
    151,674.78/209,320.98 = 87,164.76/x
  3. Step 3: Cross multiply
    151,674.78x = 209,320.98 × 87,164.76
  4. Step 4: Simplify right side
    151,674.78x = 18,245,412,984.66
  5. Step 5: Solve for x
    x = 18,245,412,984.66/151,674.78
  6. Step 6: Final answer
    x = 120,292.99

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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.