Home / 100,289.93-138,381.95-64,471.73

Finding the Fourth Proportional to 100,289.93, 138,381.95 and 64,471.73

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Solution

The fourth proportional to 100,289.93, 138,381.95 and 64,471.73 is: 88,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,289.93 : 138,381.95 = 64,471.73 : x
  2. Step 2: Convert to fraction form
    100,289.93/138,381.95 = 64,471.73/x
  3. Step 3: Cross multiply
    100,289.93x = 138,381.95 × 64,471.73
  4. Step 4: Simplify right side
    100,289.93x = 8,921,723,186.54
  5. Step 5: Solve for x
    x = 8,921,723,186.54/100,289.93
  6. Step 6: Final answer
    x = 88,959.32

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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.