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Finding the Fourth Proportional to 104,868.88, 157,147.77 and 77,030.80

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Solution

The fourth proportional to 104,868.88, 157,147.77 and 77,030.80 is: 115,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,868.88 : 157,147.77 = 77,030.80 : x
  2. Step 2: Convert to fraction form
    104,868.88/157,147.77 = 77,030.80/x
  3. Step 3: Cross multiply
    104,868.88x = 157,147.77 × 77,030.80
  4. Step 4: Simplify right side
    104,868.88x = 12,105,218,441.32
  5. Step 5: Solve for x
    x = 12,105,218,441.32/104,868.88
  6. Step 6: Final answer
    x = 115,431.94

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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.