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Finding the Fourth Proportional to 101,780.88, 152,663.64 and 51,829.68

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Solution

The fourth proportional to 101,780.88, 152,663.64 and 51,829.68 is: 77,740.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,780.88 : 152,663.64 = 51,829.68 : x
  2. Step 2: Convert to fraction form
    101,780.88/152,663.64 = 51,829.68/x
  3. Step 3: Cross multiply
    101,780.88x = 152,663.64 × 51,829.68
  4. Step 4: Simplify right side
    101,780.88x = 7,912,507,608.84
  5. Step 5: Solve for x
    x = 7,912,507,608.84/101,780.88
  6. Step 6: Final answer
    x = 77,740.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.