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Finding the Fourth Proportional to 117,366.80, 175,855.80 and 99,870.80

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Solution

The fourth proportional to 117,366.80, 175,855.80 and 99,870.80 is: 149,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,366.80 : 175,855.80 = 99,870.80 : x
  2. Step 2: Convert to fraction form
    117,366.80/175,855.80 = 99,870.80/x
  3. Step 3: Cross multiply
    117,366.80x = 175,855.80 × 99,870.80
  4. Step 4: Simplify right side
    117,366.80x = 17,562,859,430.64
  5. Step 5: Solve for x
    x = 17,562,859,430.64/117,366.80
  6. Step 6: Final answer
    x = 149,640.78

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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.