Home / 107,728.68-148,703.94-77,531.88

Finding the Fourth Proportional to 107,728.68, 148,703.94 and 77,531.88

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Solution

The fourth proportional to 107,728.68, 148,703.94 and 77,531.88 is: 107,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,728.68 : 148,703.94 = 77,531.88 : x
  2. Step 2: Convert to fraction form
    107,728.68/148,703.94 = 77,531.88/x
  3. Step 3: Cross multiply
    107,728.68x = 148,703.94 × 77,531.88
  4. Step 4: Simplify right side
    107,728.68x = 11,529,296,031.61
  5. Step 5: Solve for x
    x = 11,529,296,031.61/107,728.68
  6. Step 6: Final answer
    x = 107,021.60

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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.