Home / 100,623.88-138,874.13-64,917.77

Finding the Fourth Proportional to 100,623.88, 138,874.13 and 64,917.77

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Solution

The fourth proportional to 100,623.88, 138,874.13 and 64,917.77 is: 89,595.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,623.88 : 138,874.13 = 64,917.77 : x
  2. Step 2: Convert to fraction form
    100,623.88/138,874.13 = 64,917.77/x
  3. Step 3: Cross multiply
    100,623.88x = 138,874.13 × 64,917.77
  4. Step 4: Simplify right side
    100,623.88x = 9,015,398,054.77
  5. Step 5: Solve for x
    x = 9,015,398,054.77/100,623.88
  6. Step 6: Final answer
    x = 89,595.01

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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.