Home / 100,192.51-138,359.33-64,444.58

Finding the Fourth Proportional to 100,192.51, 138,359.33 and 64,444.58

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Solution

The fourth proportional to 100,192.51, 138,359.33 and 64,444.58 is: 88,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,192.51 : 138,359.33 = 64,444.58 : x
  2. Step 2: Convert to fraction form
    100,192.51/138,359.33 = 64,444.58/x
  3. Step 3: Cross multiply
    100,192.51x = 138,359.33 × 64,444.58
  4. Step 4: Simplify right side
    100,192.51x = 8,916,508,910.93
  5. Step 5: Solve for x
    x = 8,916,508,910.93/100,192.51
  6. Step 6: Final answer
    x = 88,993.77

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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.