Home / 151,226.85-208,712.93-86,721.33

Finding the Fourth Proportional to 151,226.85, 208,712.93 and 86,721.33

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Solution

The fourth proportional to 151,226.85, 208,712.93 and 86,721.33 is: 119,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,226.85 : 208,712.93 = 86,721.33 : x
  2. Step 2: Convert to fraction form
    151,226.85/208,712.93 = 86,721.33/x
  3. Step 3: Cross multiply
    151,226.85x = 208,712.93 × 86,721.33
  4. Step 4: Simplify right side
    151,226.85x = 18,099,862,877.80
  5. Step 5: Solve for x
    x = 18,099,862,877.80/151,226.85
  6. Step 6: Final answer
    x = 119,686.83

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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.