Home / 111,075.26-153,124.41-79,188.80

Finding the Fourth Proportional to 111,075.26, 153,124.41 and 79,188.80

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Solution

The fourth proportional to 111,075.26, 153,124.41 and 79,188.80 is: 109,166.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,075.26 : 153,124.41 = 79,188.80 : x
  2. Step 2: Convert to fraction form
    111,075.26/153,124.41 = 79,188.80/x
  3. Step 3: Cross multiply
    111,075.26x = 153,124.41 × 79,188.80
  4. Step 4: Simplify right side
    111,075.26x = 12,125,738,278.61
  5. Step 5: Solve for x
    x = 12,125,738,278.61/111,075.26
  6. Step 6: Final answer
    x = 109,166.87

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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.